Zscaler Outage History

Uptime record, past incidents, and downtime history for Zscaler.

Checking current status...

90-Day Trend

Monthly Uptime

Month	Uptime	Days Tracked	Days with Issues
May 2026	4%	25	24
April 2026	3.3%	30	29
March 2026	3.2%	31	30
February 2026	0%	5	5

Uptime is calculated from daily worst-status snapshots. A day with any non-operational status counts as a day with issues.

Daily Status (Last 91 Days)

Feb 24 Today

Operational Degraded Partial Outage Major Outage Maintenance No Data

Incident History

May 2026

ZIdentity Portal Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.eu.zsdpc.net, zslogin.net

degraded

Started: May 24, 6:01 AM

investigating

Zscaler is investigating an issue with ZIdentity Portal on our zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net Cloud. Status changes will be updated here as they become available.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become...

May 24, 6:01 AM

Scheduled Maintenance Extended - zscloud.net

minor

Started: May 23, 5:05 PM

resolved

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscloud.net cloud (Asia Pacific Region) by 4 hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

May 23, 5:05 PM

Scheduled Maintenance Extended - EMEA Region - zscalertwo.net

minor

Started: May 22, 11:31 PM

resolved

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the EMEA region's datacenters on zscalertwo.net cloud by 2 hours. During this extended maintenance window the ZIA Admin Portal, including policy management and reporting access, and new user authentication should be successful. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed

May 22, 11:31 PM

Scheduled Maintenance Extended - EMEA Region - zscalerthree.net

minor

Started: May 21, 11:00 PM

resolved

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the EMEA region's datacenters on zscalerthree.net cloud by 2 hours. During this extended maintenance window the ZIA Admin Portal, including policy management and reporting access, and new user authentication should be successful. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed

May 21, 11:00 PM

Packet Capture Probing Issue - zdxcloud.net

degraded

Started: May 20, 4:31 PM

investigating

Zscaler has identified an issue affecting the zdxcloud.net cloud. As a result, the Packet Capture Probing option is currently temporarily unavailable when starting a New Diagnostics Session.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Update - Thu, 21 May 2026 15:10:19 UTCPa...

May 20, 4:31 PM

ZDX Server Error Issue - zdxcloud.net

degraded

Started: May 20, 10:11 AM

investigating

Zscaler has detected an issue with its zdxcloud.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Latest Update - Thu, 21 May 2026 10:50:18 UTCMitigation efforts remain effective, and service metrics continue to be stable. Zscaler will maintain close monitoring through...

May 20, 10:11 AM

Scheduled Maintenance Extended - CHI - zscalerthree.net

minor

Started: May 20, 4:01 AM

resolved

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance for CHI DCs by two hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

May 20, 4:01 AM

Scheduled Maintenance Extended - LON, HKG - zscalertwo.net, zscalerthree.net

minor

Started: May 19, 10:21 PM

resolved

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance for LON and HKG DCs by an hour. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

May 19, 10:21 PM

Inline DLP Policy Editing Issue for Non Super Admin Users - zscalertwo.net, zscalerthree.net

degraded

Started: May 19, 5:52 PM

investigating

Zscaler is investigating an issue impacting tenants with Admin Ranking enabled, where administrators without Super Admin privileges may be unable to edit inline DLP policies after creation. Current investigation indicates newly created or existing inline DLP policies may be assigned an incorrect administrative rank value, preventing subsequent policy modifications by the original administrator. At this time, Super Admin accounts remain able to modify affected policies. Zscaler teams are activ...

May 19, 5:52 PM

Tokyo V (TYO5) Datacenter Network Maintenance - zscloud.net

minor

Started: May 19, 10:53 AM

resolved

Zscaler will be performing hardware maintenance in Tokyo V (TYO5) Datacenter.Maintenance window: Start: 2026-05-20 11:00 UTC End: 2026-05-20 14:00 UTC (Local Time 2026-05-20 20:00 - 2026-05-20 23:00 JST)Update - Wed, 20 May 2026 12:48:09 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 19, 10:53 AM

DNS resolution Control Gateway issue on ZS2 - zscalertwo.net

degraded

Started: May 19, 5:58 AM

investigating

Zscaler has detected an issue with its zscalertwo.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root cause- Issue occurred due to an control-plane event that temporarily prevented control gateway DNS endpoints from being published.Latest Update - Tue, 19 May 2026 ...

May 19, 5:58 AM

Upcoming New Data Centers and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

degraded

Started: May 19, 4:32 AM

investigating

Dear Zscaler Customer,In accordance with Zscaler Service Continuity Policy and per email notification sent on May 15, 2026, we would like to notify you of the upcoming new data centers and expansions at the locations listed below. These would be available anytime on or after July 14, 2026; 60 days or more from the date the first email notification is sent.Please update your firewall policy rules and any upstream Access Control Lists (ACLs) to allow the new IP address ranges to avoid any ser...

May 19, 4:32 AM

Miami IV Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

degraded

Started: May 18, 9:23 PM

investigating

Dear Zscaler Customer,You are receiving this notice in accordance with the Zscaler Service Continuity Policy.As part of our effort to enhance our Security Cloud’s robustness and performance, Zscaler will be bringing online a new Miami IV (MIA4) data center. This facility will be added to the public resolution service (Auto Geo Proximity) on May 19, 2026What if I have more questions? Contact Zscaler Support via the “Support” link at the top-right of the Zscaler Administration U.I page....

May 18, 9:23 PM

Reminder Notification for Upcoming New DCs and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

degraded

Started: May 18, 6:47 PM

investigating

Dear Customer, In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on April 1st, 2026, we would like to remind you of the upcoming New DCs and expansions at the locations listed below. These would be available anytime on or after May 31, 2026Please update your firewall policy rules and any upstream access lists to allow the new IP address ranges to avoid any service disruption.RegionLocationCIDRNotesAmericasMontreal I198.1...

May 18, 6:47 PM

Madrid IV (MAD4) Datacenter Network Maintenance - zscalertwo.net

minor

Started: May 18, 2:59 PM

resolved

Zscaler will be performing hardware maintenance in Madrid IV (MAD4) Datacenter.Maintenance window: Start: 2026-05-19 18:00 UTC End: 2026-05-19 21:00 UTC (Local Time 2026-05-19 20:00 - 2026-05-19 23:00 CEST)Update - Tue, 19 May 2026 21:01:52 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 18, 2:59 PM

Madrid IV (MAD4) Datacenter Network Maintenance - zscloud.net

minor

Started: May 18, 7:11 AM

resolved

Zscaler will be performing hardware maintenance in the Madrid IV (MAD4) Datacenter.Maintenance window,Start: 2026-05-19 16:00 UTCEnd: 2026-05-19 19:00 UTC(i.e. 2026-05-19 18:00 - 21:00 Local Time)Update - Tue, 19 May 2026 18:49:58 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 18, 7:11 AM

Urgent Maintenance on AMER Region - zscaler.net

minor

Started: May 16, 5:48 AM

resolved

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on AMER Region on the zscaler.net cloud. This maintenance can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support ...

May 16, 5:48 AM

Amsterdam II Datacenter Issue - zscalertwo.net

degraded

Started: May 16, 5:31 AM

investigating

Zscaler has detected an issue with our Amsterdam II datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status cha...

May 16, 5:31 AM

Helsinki I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscalerthree.net

major

Started: May 15, 6:56 PM

investigating

Zscaler will be enabling IPv6 at our Helsinki I (HEL1) Data Center. During the maintenance window the services through HEL1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 22, 9:00 am PDT (May 22, 16:00 UTC)End time is May 22, 2:00 pm PDT (May 22, 21:00 UTC)

May 15, 6:56 PM

Helsinki I Datacenter Scheduled Maintenance - Service Expansion - zscloud.net

major

Started: May 15, 6:54 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Helsinki I (HEL1) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscloud.net/cenrMaintenance Window:Start time is May 22, 9:00 am PDT (May 22, 16:00 UTC)End time is May 22, 2:00 pm PDT ...

May 15, 6:54 PM

Hong Kong III Datacenter Scheduled Maintenance – IPv6 Enablement - zscaler.net, zscloud.net

major

Started: May 15, 6:39 PM

investigating

Zscaler will perform scheduled maintenance at our Hong Kong III (HKG3) Data Center to complete preparatory work for future IPv6 enablement. During the maintenance window, services through the HKG3 Data Center may be restarted in phases to minimize impact.Other Zscaler sites and services will continue to operate normally.Maintenance Window:Start time is May 20, 9:00 am PDT (May 20, 16:00 UTC)End time is May 20, 4:00 pm PDT (May 20, 23:00 UTC)

May 15, 6:39 PM

Capetown IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: May 15, 6:10 PM

investigating

Zscaler will be enabling IPv6 at our Capetown IV (CPT4) Data Center. During the maintenance window the services through CPT4 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 19, 9:00 am PDT (May 19, 16:00 UTC)End time is May 19, 4:00 pm PDT (May 19, 23:00 UTC)

May 15, 6:10 PM

Mexico City I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: May 15, 5:52 PM

investigating

Zscaler will be enabling IPv6 at our Mexico City I (MEX1) Data Center. During the maintenance window the services through MEX1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 18, 6:00 pm PDT (May 19, 1:00 UTC)End time is May 18, 11:00 pm PDT (May 19, 6:00 UTC)

May 15, 5:52 PM

IPsec Tunnel Connectivity Issues - zscalerthree.net

partial

Started: May 15, 9:41 AM

investigating

Zscaler is investigating an issue affecting a subset of customer IPsec tunnels. Issue is limited to new tunnel creation. Our team is actively working on resolution, and we will provide further updates as more information becomes available.For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause- The issue occurred due to a synchronization discrepan...

May 15, 9:41 AM

Zscaler Client Connector-Based End User Notifications Issue - zscalerthree.net

degraded

Started: May 15, 7:05 AM

investigating

Zscaler has detected an issue with Zscaler Client Connector-Based End User Notifications on its zscalerthree.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Latest Update - Sat, 16 May 2026 19:40:20 UTCZscaler has completed the primary investigation regarding the is...

May 15, 7:05 AM

Scheduled Maintenance Extended - EMEA Region - zscloud.net

minor

Started: May 14, 10:53 PM

resolved

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the EMEA region's datacenters on zscloud.net cloud by 3 hours. During this extended maintenance window the ZIA Admin Portal, including policy management and reporting access, and new user authentication should be successful. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed.Update - Fri, 15 May 2026 01:25:55 UTCThis activity has ...

May 14, 10:53 PM

Urgent Maintenance - zscalerone.net

major

Started: May 14, 7:34 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Friday at 01:00 AM Pacific Time on May 15, 2026 (Friday, May 15, 2026 08:00 AM UTC), and can take up to 4 hours to complete.During maintenance, which includes the control plane, the Admin Portal might be temporarily placed into read-only mode, making the following unavailable: configuration changes, new user provisioning, and existing user updates t...

May 14, 7:34 PM

RI CCS Test - zscaler.net

major

Started: May 14, 8:00 AM

investigating

Zscaler has detected an issue with PAC file serving on its zscaler.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

May 14, 8:00 AM

RI DC Test - zscaler.net

major

Started: May 14, 7:59 AM

investigating

Zscaler has detected an issue with its Atlanta II datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status chang...

May 14, 7:59 AM

Chicago I (CHI1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscalerthree.net, zpabeta.net

major

Started: May 14, 5:06 AM

investigating

Zscaler will be performing hardware maintenance in Chicago I (CHI1) Datacenter Datacenter.Scheduled Maintenance window, Start: 2026-05-15 23:00 UTC End: 2026-05-16 01:00 UTC (Local Time 2026-05-15 18:00 - 2026-05-15 20:00)

May 14, 5:06 AM

Urgent Maintenance - zdxcloud.net

major

Started: May 14, 2:39 AM

investigating

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Thursday at 03:00 AM UTC on 14th May, 2026, and can take up to 2 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.Update - Thu, 14 Ma...

May 14, 2:39 AM

London III (LON3) Datacenter Network Maintenance - zscaler.net

minor

Started: May 13, 2:29 AM

resolved

Zscaler will be performing hardware maintenance in the London III (LON3) Datacenter.Maintenance window,Start: 2026-05-14 20:30 BSTEnd: 2026-05-14 23:30 BST(i.e. 2026-05-14 19:30 - 22:30 UTC)Update - Thu, 14 May 2026 21:54:47 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 13, 2:29 AM

Datacenter Maintenance - private.zscaler.com

minor

Started: May 13, 12:33 AM

resolved

Zscaler is performing proactive emergency maintenance activity for data centers across Geo regions.Users may observe very brief disconnect and reconnect to ZPA cloud during the maintenance activity. Update - Wed, 13 May 2026 14:50:30 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 13, 12:33 AM

Duplicate User Activity Logs Observed in SIEM LSS - private.zscaler.com, zpatwo.net

major

Started: May 12, 6:34 PM

investigating

Zscaler is investigating an issue impacting a subset of customers using SIEM Log Streaming Service (LSS), where duplicate User Activity log entries may be observed within streamed payloads. Customers may experience increased SIEM log ingestion volume. There is no impact to inline traffic processing, policy enforcement, or overall service availability.Zscaler teams are actively investigating the issue and evaluating mitigation options. For detailed updates, please check the Service Status sect...

May 12, 6:34 PM

Connectivity Issues Affecting India Data Centers - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: May 12, 6:29 PM

investigating

We are currently investigating a connectivity issue impacting traffic between India and certain European destinations, primarily the UK. Customers may experience intermittent performance degradation affecting international traffic originating from the following Zscaler data centers: Chennai II, Hyderabad I, Kolkata I, Mumbai VI, and Mumbai VII. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, ...

May 12, 6:29 PM

Singapore IV (SIN4) Datacenter Network Maintenance - zscloud.net, zscalerthree.net, zdxcloud.net

major

Started: May 12, 8:17 AM

investigating

Zscaler will be performing hardware maintenance in the Singapore IV (SIN4) Datacenter.Maintenance window,Start: 2026-05-15 11:00 UTCEnd: 2026-05-15 13:00 UTC(Local Time 2026-05-15 19:00 - 21:00)

May 12, 8:17 AM

Zurich I (ZRH1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: May 11, 7:38 PM

investigating

Zscaler will be performing hardware maintenance in the Zurich I (ZRH1) Datacenter.Maintenance window,Start: 2026-05-13 19:00 CESTEnd: 2026-05-13 23:00 CEST(i.e. 2026-05-13 17:00 - 21:00 UTC)During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.Update - Wed, 13 May 2026 23:50:32 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 11, 7:38 PM

Copenhagen II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: May 11, 6:31 PM

investigating

Zscaler will be enabling IPv6 at our Copenhagen II (CPH2) Data Center. During the maintenance window the services through CPH2 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 15, 9:00 am PDT (May 15, 16:00 UTC)End time is May 15, 2:00 pm PDT (May 15, 21:00 UTC)

May 11, 6:31 PM

Dallas II Datacenter Scheduled Maintenance - IPv6 Enablement - zscloud.net

major

Started: May 11, 6:19 PM

investigating

Zscaler will be enabling IPv6 at our Dallas II (DFW2) Data Center. During the maintenance window the services through DFW2 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 14, 6:00 pm PDT (May 15, 1:00 UTC)End time is May 14, 11:00 pm PDT (May 15, 6:00 UTC)

May 11, 6:19 PM

Frankfurt IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

major

Started: May 11, 5:16 PM

investigating

Zscaler will be enabling IPv6 at our Frankfurt IV (FRA4) Data Center. During the maintenance window the services through FRA4 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 13, 9:00 am PDT (May 13, 16:00 UTC)End time is May 13, 4:00 pm PDT (May 13, 23:00 UTC)Update - Wed, 13 May 2026 23:19:31 UTCThis activity has been completed. Please contact Zscaler Suppo...

May 11, 5:16 PM

Dallas I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

major

Started: May 11, 5:00 PM

investigating

Zscaler will be enabling IPv6 at our Dallas I (DFW1) Data Center. During the maintenance window the services through DFW1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 12, 6:00 pm PDT (May 13, 1:00 UTC)End time is May 12, 12:00 pm PDT (May 13, 7:00 UTC)Update - Wed, 13 May 2026 07:13:20 UTCThis activity has been completed. Please contact Zscaler Support if...

May 11, 5:00 PM

Perth I (PER1) Datacenter Network Maintenance - zscalertwo.net

major

Started: May 11, 12:09 PM

investigating

Zscaler will be performing hardware maintenance in Perth I (PER1) Datacenter.Maintenance window: Start: 2026-05-12 12:00 UTC End: 2026-05-12 15:00 UTC (Local Time 2026-05-12 20:00 - 2026-05-12 23:00 AWST)Update - Tue, 12 May 2026 14:00:37 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 11, 12:09 PM

Atlanta III (ATL3) Datacenter Network Maintenance - zscalertwo.net, private.zscaler.com

major

Started: May 11, 6:56 AM

investigating

Zscaler will be performing hardware maintenance in Atlanta III (ATL3) Datacenter.Scheduled Maintenance window, Start: 2026-05-14 02:00 UTC End: 2026-05-14 06:00 UTC (Local Time 2026-05-13 22:00 - 2026-05-14 02:00)

May 11, 6:56 AM

User Authentication Issue on Beijing III and Shanghai II datacenter - zscaler.net

major

Started: May 11, 4:03 AM

investigating

Zscaler has detected an issue with its Beijing III, Shanghai II datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP)....

May 11, 4:03 AM

China Premium Access Plus Beijing Datacenter (Beijing V) Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: May 11, 3:50 AM

investigating

Beijing V DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within these data centres may experience intermittent disconnections.Start Time: 2026-05-27 20:00:00 UTCEnd Time: 2026-05-27 21:00:00 UTC(Datacenter Local Time 2026-05-28 04:00 - 2026-05-28 05:00 China Standard Time (UTC+8:00))Reason of Maintenance: Provider advised maintenance.Impact During Maintenance: Intermittent connectivity might be observed during t...

May 11, 3:50 AM

China Premium Access Plus Beijing Datacenter (Beijing V) Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: May 11, 3:48 AM

investigating

Beijing V DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within these data centres may experience intermittent disconnections.Start Time: 2026-05-14 16:00:00 UTCEnd Time: 2026-05-14 17:00:00 UTC(Datacenter Local Time 2026-05-15 00:00 - 2026-05-15 01:00 China Standard Time (UTC+8:00))Reason of Maintenance: Provider advised maintenance.Impact During Maintenance: Intermittent connectivity might be observed during t...

May 11, 3:48 AM

Urgent Maintenance - zdxcloud.net

major

Started: May 10, 2:59 AM

investigating

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Sunday at 03:05 AM UTC on 10th May, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.Update - Sun, 10 May ...

May 10, 2:59 AM

Urgent Maintenance - zdxcloud.net

major

Started: May 9, 3:34 AM

investigating

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Saturday at 03:30 AM UTC on 9th May, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.Update - Sat, 09 May...

May 9, 3:34 AM

London III (LON3) Datacenter Network Maintenance - zscaler.net

major

Started: May 8, 10:46 PM

investigating

Zscaler will be performing hardware maintenance in the London III (LON3) Datacenter.Maintenance window,Start: 2026-05-12 20:30 BSTEnd: 2026-05-12 23:30 BST(i.e. 2026-05-12 19:30 - 22:30 UTC)During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

May 8, 10:46 PM

Atlanta II (ATL2) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: May 8, 6:56 PM

investigating

Zscaler will be performing hardware maintenance in the Atlanta II (ATL2) Datacenter.Maintenance window,Start: 2026-5-12 03:00 EDTEnd: 2026-5-12 07:00 EDT(i.e. 2026-5-12 07:00 - 11:00 UTC)During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.

May 8, 6:56 PM

ZDX Server Error Issue - zdxcloud.net

major

Started: May 8, 10:14 AM

investigating

Zscaler has detected an issue with its zdxcloud.net Cloud. Customers may encounter intermittent ZDX Server Errors; additionally, the ZCC ZDX tab may not display scores or allow tests to run, and the ZDX portal may show gaps or delayed telemetry for impacted devices.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be po...

May 8, 10:14 AM

Urgent Scheduled Maintenance - zdxcloud.net

major

Started: May 8, 6:08 AM

investigating

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Friday at 06:30 AM UTC on 8th May, 2026, and can take up to 30 minutes to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.Update - Fri, 08 M...

May 8, 6:08 AM

New enrollments failing for App Connectors/PSEs/Network Connectors - private.zscaler.com, zpatwo.net, zpabeta.net

major

Started: May 8, 6:07 AM

investigating

Zscaler is currently investigating reports of issues with new enrollments on its private.zscaler.com Cloud. Customer Guidance: Customers running App Connector version 52 or earlier should avoid restarting, provisioning, or reprovisioning App Connectors at this time. If no changes are made, existing traffic and connected services remain operational. If you are experiencing an issue or have an urgent need to make changes, please contact support immediately for assistance, as alternative op...

May 8, 6:07 AM

Tel Aviv II (TLV2) Datacenter Scheduled Maintenance - zscloud.net

major

Started: May 8, 3:38 AM

investigating

Zscaler will be performing hardware maintenance in Tel Aviv II (TLV2) Datacenter.New Maintenance window,  Start: 2026-05-11 01:00 UTC  End:  2026-05-11 04:00 UTC  (Local Time 2026-05-11 04:00 - 2026-05-11 07:00 Local Time)Update - Mon, 11 May 2026 03:22:55 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 8, 3:38 AM

Reporting and Logging Issue - private.zscaler.com

major

Started: May 8, 3:19 AM

investigating

Zscaler has detected an issue with Reporting and Logging on its private.zscaler.com cloud in US1 Logging Zone. We are investigating periods of slowness, connection timeouts and/or increased latency. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause: Intermittent b...

May 8, 3:19 AM

Intermittent Connectivity Issues with Atlassian Jira in Multiple US Regions - zscalertwo.net

major

Started: May 7, 7:52 PM

investigating

Zscaler is currently investigating reports of intermittent access issues with Atlassian Jira. Some customers may experience intermittent connectivity issues or timeouts when attempting to access Atlassian Jira.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause- A servic...

May 7, 7:52 PM

ZDX Server Error Issue - zdxcloud.net

major

Started: May 7, 10:48 AM

investigating

Zscaler has identified an issue affecting the zdxcloud.net cloud. Customers may encounter ZDX Server Errors; additionally, the ZCC ZDX tab may not display scores or allow tests to run, and the ZDX portal may show gaps or delayed telemetry for impacted devices.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted t...

May 7, 10:48 AM

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

major

Started: May 7, 6:56 AM

investigating

We will be performing planned maintenance on our platform infrastructure in the Prod EMEA region to enhance availability and resiliency.  Some customers may witness below impact during this maintenance window:Momentary disconnect and auto-reconnect of zcc.Any active session will be disconnected and logged under ZPA User Activity logs as “MT_CLOSED_TLS_CONN_GONE_SCIM_USER_MOVED”Important Note: No action is required from customers and this communication is only intended to in...

May 7, 6:56 AM

Amsterdam II (AMS2) Data Center Issue - zscaler.net, zscalertwo.net, zscalerthree.net

major

Started: May 7, 12:12 AM

investigating

Zscaler has detected an issue with its Amsterdam II data center and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Statu...

May 7, 12:12 AM

Urgent Maintenance - zdxcloud.net

major

Started: May 6, 6:21 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Wednesday at 08:00 PM Pacific Time on May 6, 2026 (Thursday, May 7, 2026 03:00 AM UTC), and can take up to 3 hours to complete.During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collec...

May 6, 6:21 PM

Shanghai VI Data Center Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: May 6, 4:50 AM

investigating

Zscaler has detected an issue with its Shanghai VI datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status ...

May 6, 4:50 AM

Urgent Maintenance - zscalerone.net

major

Started: May 5, 11:19 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Thursday at 02:30 PM Pacific Time on May 7, 2026 (Thursday, May 7, 2026 09:30 PM UTC), and can take up to 4 hours to complete.During maintenance, which includes the control plane, the Admin Portal might be temporarily placed into read-only mode, making the following unavailable: configuration changes, new user provisioning, and existing user updates...

May 5, 11:19 PM

Hong Kong III Datacenter Scheduled Maintenance – IPv6 Enablement - zscaler.net, zscloud.net

major

Started: May 5, 7:18 PM

investigating

Zscaler will perform scheduled maintenance at our Hong Kong III (HKG3) Data Center to complete preparatory work for future IPv6 enablement. During the maintenance window, services through the HKG3 Data Center may be restarted in phases to minimize impact.Other Zscaler sites and services will continue to operate normally.Maintenance Window:Start time is May 7, 9:00 am PDT (May 7, 16:00 UTC)End time is May 7, 4:00 pm PDT (May 7, 23:00 UTC)

May 5, 7:18 PM

Urgent Maintenance Notification – Zero Trust Browser - zscalerthree.net

major

Started: May 5, 6:28 PM

investigating

Zscaler will perform urgent maintenance for the Zero Trust Browser service to update a required Zscaler Internet Access (ZIA) certificate on zscalerthree.net cloud.Maintenance Window:May 6, 2026 | 12:00 AM – 02:00 AM UTCExpected Impact:Existing Zero Trust Browser sessions will not be affected during this maintenance activity. Customers initiating new Zero Trust Browser sessions during the maintenance window may experience brief and intermittent access issues while the certificate update is ...

May 5, 6:28 PM

Capetown IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscalerone.net

major

Started: May 5, 4:33 PM

investigating

Zscaler will be enabling IPv6 at our Capetown IV (CPT4) Data Center.  During the maintenance window the services through CPT4 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 7, 9:00 am PDT (May 7, 16:00 UTC)End time is May 7, 2:00 pm PDT (May 7, 21:00 UTC)

May 5, 4:33 PM

Sao Paulo IV Datacenter Scheduled Maintenance - Service Expansion - zscalertwo.net

major

Started: May 5, 12:01 AM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Sao Paulo IV (SAO4) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscalertwo.net/cenrMaintenance Window:Start time is May 5, 6:00 pm PDT (May 6, 1:00 UTC)End time is May 5, 11:00 p...

May 5, 12:01 AM

Sao Paulo IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscalerthree.net

major

Started: May 4, 11:56 PM

investigating

Zscaler will be enabling IPv6 at our Sao Paulo IV (SAO4) Data Center.  During the maintenance window the services through SAO4 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 5, 6:00 pm PDT (May 6, 1:00 UTC)End time is May 5, 11:00 pm PDT (May 6, 6:00 UTC)Update - Wed, 06 May 2026 07:09:06 UTCThis activity has been completed. Please contact Zscaler Suppor...

May 4, 11:56 PM

Kuala Lumpur II (KUL2) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: May 4, 8:54 PM

investigating

Zscaler will be performing hardware maintenance in the Kuala Lumpur II (KUL2) Datacenter.Maintenance window,Start: 2026-05-06 04:00 GMT+8End: 2026-05-06 06:00 GMT+8(i.e. 2026-05-06 20:00 - 22:00 UTC)During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact. Update - Wed, 06 May 2026 21:11:55 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 4, 8:54 PM

Kolkata I (CCU1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: May 4, 8:51 PM

investigating

Zscaler will be performing hardware maintenance in the Kolkata I (CCU1) Datacenter.Maintenance window,Start: 2026-05-06 01:30 ISTEnd: 2026-05-06 03:30 IST(i.e. 2026-05-06 20:00 - 22:00 UTC)During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact. Update - Wed, 06 May 2026 21:11:43 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

May 4, 8:51 PM

Tel Aviv II (TLV2) Datacenter Scheduled Maintenance - zscloud.net

major

Started: May 4, 1:13 AM

investigating

Zscaler will be performing hardware maintenance in Tel Aviv II (TLV2) Datacenter.New Maintenance window,  Start: 2026-05-05 01:00 UTC  End:  2026-05-05 04:00 UTC  (Local Time 2026-05-05 04:00 - 2026-05-05 07:00 Local Time)

May 4, 1:13 AM

ZPA Logging zone Maintenance - zpatwo.net

major

Started: May 3, 2:43 PM

investigating

We will be performing maintenance activities to add a new Logging Zone in ZPATWO cloud to augment capacity, availability and resiliency. Some customers may witness below impact during this maintenance window:Admin UI dashboards and diagnostics may display incomplete data temporarily.If alerts are configured for these components, false events may be triggered.Nanolog enabled customer will see timeouts on the dashboards.Important Note:This maintenance will not impact live traffic. ZCC enrollmen...

May 3, 2:43 PM

Hong Kong III Datacenter Scheduled Maintenance - IPv6 Enablement - zscalertwo.net, zscalerthree.net

major

Started: May 1, 11:59 PM

investigating

Zscaler will be enabling IPv6 at our Hong Kong III (HKG3) Data Center.  During the maintenance window the services through HKG3 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 5, 9:00 am PDT (May 5, 16:00 UTC)End time is May 5, 5:00 pm PDT (May 6, 00:00 UTC)Update 5/5: Extending Maintenance

May 1, 11:59 PM

Helsinki I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscalerthree.net

major

Started: May 1, 12:22 AM

investigating

Zscaler will be enabling IPv6 at our Helsinki I (HEL1) Data Center.  During the maintenance window the services through HEL1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 7, 9:00 am PDT (May 7,16:00 UTC)End time is May 7, 2:00 pm PDT (May 7, 21:00 UTC)

May 1, 12:22 AM

Helsinki I Datacenter Scheduled Maintenance - Service Expansion - zscloud.net

major

Started: May 1, 12:17 AM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Helsinki I (HEL1) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscloud.net/cenrMaintenance Window:Start time is May 7, 9:00 am PDT (May 7, 16:00 UTC)End time is May 7, 2:00 pm PDT...

May 1, 12:17 AM

Copenhagen II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: May 1, 12:05 AM

investigating

Zscaler will be enabling IPv6 at our Copenhagen II (CPH2) Data Center.  During the maintenance window the services through CPH2 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 8, 9:00 am PDT (May 8, 16:00 UTC)End time is May 8, 2:00 pm PDT (May 8, 21:00 UTC)

May 1, 12:05 AM

Security Advisory: Linux Kernel Vulnerability (CVE-2026-31431) - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

major

Started: May 1, 12:00 AM

investigating

On April 29, 2026, Zscaler was made aware of CVE-2026-31431, a Local Privilege Escalation (LPE) vulnerability affecting Linux kernel versions 4.14 and later. Zscaler has addressed the vulnerability across all its clouds through patching or mitigation. Zscaler Internet Access (ZIA) distributed products are not impacted. Zscaler suggests adhering to the instructions issued by the operating system vendors for any Linux systems and Zscaler products listed below:Zscaler Private Access (ZPA):&...

May 1, 12:00 AM

April 2026

Capetown IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 30, 11:57 PM

investigating

Zscaler will be enabling IPv6 at our Capetown IV (CPT4) Data Center.  During the maintenance window the services through CPT4 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 7, 9:00 am PDT (May 7, 16:00 UTC)End time is May 7, 2:00 pm PDT (May 7, 21:00 UTC)

Apr 30, 11:57 PM

Amsterdam II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscalerthree.net

major

Started: Apr 30, 11:43 PM

investigating

Zscaler will be enabling IPv6 at our Amsterdam II (AMS2) Data Center.  During the maintenance window the services through AMS2 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 6, 10:00 am PDT (May 6, 17:00 UTC)End time is May 6, 3:00 pm PDT (May 6, 22:00 UTC)

Apr 30, 11:43 PM

Los Angeles II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

major

Started: Apr 30, 8:57 PM

investigating

Zscaler will be enabling IPv6 at our Los Angeles II (QLA2) Data Center.  During the maintenance window the services through QLA2 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 5, 6:00 pm PDT (May 6, 1:00 UTC)End time is May 5, 11:00 pm PDT (May 6, 6:00 UTC)

Apr 30, 8:57 PM

Hyderabad I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscloud.net

major

Started: Apr 30, 8:30 PM

investigating

Zscaler will be enabling IPv6 at our Hyderabad I (HYD1) Data Center.  During the maintenance window the services through HYD1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 4, 9:00 am PDT (May 4, 16:00 UTC)End time is May 4, 2:00 pm PDT (May 4, 21:00 UTC)

Apr 30, 8:30 PM

Los Angeles I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

major

Started: Apr 30, 8:14 PM

investigating

Zscaler will be enabling IPv6 at our Los Angeles I (QLA1) Data Center.  During the maintenance window the services through QLA1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 4, 9:00 pm PDT (May 5, 4:00 UTC)End time is May 5, 3:00 am PDT (May 5, 10:00 UTC)

Apr 30, 8:14 PM

Manchester I (MAN1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: Apr 30, 6:00 PM

investigating

Zscaler will be performing hardware maintenance in the Manchester I (MAN1) Datacenter.Maintenance window,Start: 2026-05-06 23:00 BSTEnd: 2026-05-07 03:00 BST(i.e. 2026-05-06 22:00 - 2026-05-07 02:00 UTC)During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Apr 30, 6:00 PM

Hong Kong III Datacenter Scheduled Maintenance – IPv6 Enablement - zscalertwo.net, zscalerthree.net

major

Started: Apr 30, 3:47 PM

investigating

Zscaler will perform scheduled maintenance at our Hong Kong III (HKG3) Data Center to complete preparatory work for future IPv6 enablement. During the maintenance window, services through the HKG3 Data Center may be restarted in phases to minimize impact.Other Zscaler sites and services will continue to operate normally.Maintenance Window:Start time is May 1, 9:00 am PDT (May 1, 16:00 UTC)End time is May 1 2:00 pm PDT (May 1, 21:00 UTC)

Apr 30, 3:47 PM

Cellular Portal Migration to Experience Center - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, zslogin.net

major

Started: Apr 30, 12:00 AM

investigating

Zscaler Cellular Portal is Being disabled—Move to Experience Center by May 15, 2026What is changing?Effective May 15, 2026, Zscaler is disabling the Zscaler Cellular Portal at https://admin.ztsim.com. After this date, the Zscaler Cellular Portal will no longer be available for managing or monitoring Zscaler Cellular services.To continue administering and gaining visibility into Zscaler Cellular services, customers must use Zscaler Experience Center at https://console.zsc...

Apr 30, 12:00 AM

Tokyo IV Datacenter Scheduled Maintenance - Service Expansion - zscalerthree.net

major

Started: Apr 29, 9:36 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Tokyo IV (TYO4) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscalerthree.net/cenrMaintenance Window:Start time is May 1, 8:00 am PDT (May 1,15:00 UTC)End time is May 1, 2:00 pm P...

Apr 29, 9:36 PM

Tokyo V Datacenter Scheduled Maintenance - Service Expansion - zscaler.net, zscalerthree.net

major

Started: Apr 29, 9:28 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Tokyo V (TYO5) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscaler.net/cenrhttps://config.zscaler.com/zscalerthree.net/cenrMaintenance Window:Start time is May 1, 8:00 am PDT (Ma...

Apr 29, 9:28 PM

Tokyo V Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalerthree.net

major

Started: Apr 29, 9:22 PM

investigating

Zscaler will be enabling IPv6 at our Tokyo V (TYO5) Data Center.  During the maintenance window the services through TYO5 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 1, 8:00 pm PDT (May 1,15:00 UTC)End time is May 1, 2:00 pm PDT (May 1, 21:00 UTC)

Apr 29, 9:22 PM

New Delhi I Datacenter Scheduled Maintenance - IPv6 Enablement - zscalertwo.net, zscloud.net

major

Started: Apr 29, 9:16 PM

investigating

Zscaler will be enabling IPv6 at our New Delhi I (DEL1) Data Center.  During the maintenance window the services through DEL1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 1, 9:00 am PDT (May 1, 16:00 UTC)End time is May 1, 2:00 pm PDT (May 1, 21:00 UTC)

Apr 29, 9:16 PM

Madrid IV Data Center issue - zscalertwo.net

major

Started: Apr 29, 8:00 AM

investigating

Zscaler has detected an issue with its Madrid IV data center on the zscalertwo.net cloud and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer su...

Apr 29, 8:00 AM

Seattle Datacenter Issue - zscaler.net

major

Started: Apr 28, 1:37 PM

investigating

Zscaler has detected an issue with its Seattle datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status chan...

Apr 28, 1:37 PM

Beijing V Data Center Issue - zscalertwo.net, zscloud.net

major

Started: Apr 28, 7:45 AM

investigating

Zscaler has detected an issue with its Beijing V data center and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status c...

Apr 28, 7:45 AM

Datacenter Expansion Kuala Lampur II (KUL2) - private.zscaler.com, zpatwo.net

major

Started: Apr 28, 12:36 AM

investigating

As part of our regular expansion of capacity, we are adding ZPA Public Service Edge nodes to our new data center in Kuala Lampur II (KUL2).These would be available anytime on or after May 1, 2026.RegionLocationNotesAPACKUALA LAMPUR IINew DCThe IP addresses for the DC are part of the already published IP address range.Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.For more information, please visit:https://...

Apr 28, 12:36 AM

Reminder Notification for Upcoming Data Center Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: Apr 27, 7:49 PM

investigating

Dear Customer, In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on March 13, 2026, we would like to remind you of the upcoming data center expansions at the locations listed below. These would be effective anytime on or after May 12, 2026.Please update your firewall policy rules and any upstream access control lists to allow the new IP address ranges to avoid any service disruption.RegionLocationCIDR...

Apr 27, 7:49 PM

Singapore IV Datacenter Issue - zscalertwo.net

major

Started: Apr 27, 11:08 AM

investigating

Zscaler is currently investigating reports of an issue with its Singapore IV datacenter. A subset of customers may encounter disconnections, periods of slowness or increased latency. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the...

Apr 27, 11:08 AM

Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.eu.zsdpc.net

major

Started: Apr 27, 4:03 AM

investigating

Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on April 27th, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes.Update - Mon, 27 Apr 2026 06:16:08 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Apr 27, 4:03 AM

URL and Cloud App category classification issue - zscalerthree.net

major

Started: Apr 24, 10:03 AM

investigating

Zscaler is currently investigating reports of an issue with its Mumbai VI datacenter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and updates...

Apr 24, 10:03 AM

Degradation with international destinations from Beijing, Beijing III, Shanghai and Shanghai II Data Centers - zscaler.net, zscalertwo.net, zscloud.net

major

Started: Apr 23, 10:30 AM

investigating

Zscaler is currently investigating reports of an issue with its Beijing, Beijing III, Shanghai and Shanghai II data centers. We are investigating periods of slowness, connection timeouts and/or increased latency. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For deta...

Apr 23, 10:30 AM

Operational Resilience Update: Managing Subsea Cable Risk in the Persian Gulf and Beyond - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

major

Started: Apr 23, 12:00 AM

investigating

Current geopolitical conditions have elevated the risk of potential disruptions to subsea cable infrastructure in the Persian Gulf region.If such events occur, we would expect the primary impact to be localized within the Gulf, including countries such as Iran, Iraq, Qatar, Kuwait, and to a lesser extent the UAE and Saudi Arabia. The most likely effect would be reduced capacity or constrained routing options, which may result in localized performance degradation rather than widespread outages...

Apr 23, 12:00 AM

Singapore IV Datacenter Issue - zscalertwo.net

major

Started: Apr 22, 7:10 AM

investigating

Zscaler has detected an issue with our Singapore IV datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status...

Apr 22, 7:10 AM

Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.zsdpc.net

major

Started: Apr 22, 4:03 AM

investigating

Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on April 22nd, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes.Update - Wed, 22 Apr 2026 06:25:15 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Apr 22, 4:03 AM

Migration Notice: VPN (for Legacy Apps) - Upgrading VPN Service Edge/Network Connector - private.zscaler.com, zpatwo.net, zpabeta.net

major

Started: Apr 22, 12:00 AM

investigating

Upgrading VPN Service Edge/Network Connector from Previous Generation to Next Generation with BGP SupportAs part of Zscaler’s ongoing efforts to standardize and modernize its public cloud infrastructure, customers currently using the previous generation VPN Service Edge and Network Connectors are required to migrate to the next generation VPN Service Edge with BGP support, along with Network Connectors that support BGP.The next generation VPN Service Edge and Network Connectors offer enhanc...

Apr 22, 12:00 AM

Zscaler Client Connector for Virtual Desktop Infrastructure (VDI) Deployment Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 20, 6:17 PM

investigating

Zscaler detected an issue where the existing access token that was generated before April 11, 2026 can not be used to deploy Zscaler Client Connector for VDI. As a workaround customers can create a new access token while the Zscaler team investigates and fixes the issue. We will continue to provide updates here as the investigation progresses. Status changes and additional details will be posted there as they become available.Customer Impact: Customers won’t be able to deploy Zsca...

Apr 20, 6:17 PM

Urgent Maintenance on zdxcloud.net - zdxcloud.net

major

Started: Apr 20, 7:46 AM

investigating

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Monday at 08:00 AM UTC on April 20, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.Update - Mon, 20 Apr ...

Apr 20, 7:46 AM

Urgent Maintenance on zdxcloud.net - zdxcloud.net

major

Started: Apr 20, 3:06 AM

investigating

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Monday at 03:15 AM UTC on April 20, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.Update - Mon, 20 Apr ...

Apr 20, 3:06 AM

ZDX Call Quality Monitoring Issue - zdxcloud.net

major

Started: Apr 20, 2:52 AM

investigating

Zscaler has identified an issue affecting the Call Quality Monitoring (CQM) feature on the zdxcloud.net cloud. While customers can still access the ZDX portal, they may find Zoom CQM data unavailable or observe missing call quality information. This is a temporary condition, and data is expected to be available later. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (...

Apr 20, 2:52 AM

Kuala Lumpur I Datacenter Issue - zscaler.net

major

Started: Apr 19, 10:31 AM

investigating

Zscaler has detected an issue with our Kuala Lumpur I datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Stat...

Apr 19, 10:31 AM

Mumbai VI Data Center Issue - zscaler.net

major

Started: Apr 18, 10:27 AM

investigating

Zscaler has detected an issue with its Mumbai VI datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status ch...

Apr 18, 10:27 AM

Urgent Maintenance - zscalerthree.net

major

Started: Apr 17, 6:29 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerthree.net cloud. This maintenance is scheduled for Saturday at 06:00 AM Pacific Time on April 18, 2026 (Saturday, April 18, 2026 01:00 PM UTC), and can take up to 4 hours to complete.During maintenance, which includes the control plane, the Admin Portal might be temporarily placed into read-only mode, making the following unavailable: configuration changes, new user provisioning, and existing user...

Apr 17, 6:29 PM

Reminder Notification for Upcoming New DCs and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: Apr 17, 6:07 PM

investigating

Dear Customer, In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on March 3, 2026, we would like to remind you of the upcoming New DCs and expansions at the locations listed below. These would be available anytime on or after May 2, 2026Please update your firewall policy rules and any upstream access lists to allow the new IP address ranges to avoid any service disruption.RegionLocationCIDRNotesAmeric...

Apr 17, 6:07 PM

Zscaler Client Connector for VDI Deployment Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, zslogin.net

major

Started: Apr 17, 12:51 PM

investigating

Zscaler detected an issue where the existing access token that was generated before April 11 can not be used to deploy Zscaler Client Connector. As a workaround customers can create a new access token while the Zscaler team investigates and fixes the issue. Affected Services: Zscaler Client Connector for VDIWorkaround: - Generate a new access token from the Cloud and Branch Connector portal (Administration > VDI Templates) and use the new token for any new deployments- For non-pe...

Apr 17, 12:51 PM

Urgent Scheduled Maintenance - zscalerone.net

major

Started: Apr 17, 8:05 AM

investigating

Zscaler is performing a service upgrade on Saturday at 6:00 AM PDT on April 18, 2026 (Saturday, April 18, 2026 , 01:00 PM UTC), and is expected to last up to 4 hours.During this maintenance period, the Zscaler Client Connector Portal will be in maintenance mode. As a result, access to policy management and reporting will not be available. Existing devices that are already enrolled will not be affected, but there may be intermittent failures in registering new devices. Rest assured, all logs w...

Apr 17, 8:05 AM

Helsinki I (HEL1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: Apr 16, 6:34 PM

investigating

Zscaler will be performing hardware maintenance in the Helsinki I (HEL1) Datacenter.Maintenance window,Start: 2026-04-17 21:00 EESTEnd: 2026-04-18 01:00 EEST(i.e. 2026-04-17 18:00 - 22:00 UTC)During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact. Update - Fri, 17 Apr 2026 20:03:32 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Apr 16, 6:34 PM

Stockholm III (STO3) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: Apr 16, 6:31 PM

investigating

Zscaler will be performing hardware maintenance in the Stockholm III (STO3) Datacenter.Maintenance window,Start: 2026-04-17 20:00 CESTEnd: 2026-04-18 00:00 CEST(i.e. 2026-04-17 18:00 - 22:00 UTC)During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact. Update - Fri, 17 Apr 2026 20:05:32 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Apr 16, 6:31 PM

Risk360 – Data Loading issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zscalerrisk.net

major

Started: Apr 16, 5:38 PM

investigating

Zscaler is currently investigating an issue causing computation delays. Latest risk scores and insights may be outdated or unavailable at this time. During this time, your dashboard may reflect historical data; however, your actual security posture and traffic protection are unaffected. We are currently validating a performance optimization and will restore real-time scoring. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Servi...

Apr 16, 5:38 PM

UI Node will stop supporting Public API Traffic - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 16, 4:55 PM

investigating

Zscaler is announcing the official retirement of UI nodes for servicing Public API traffic. Currently, some Public API traffic lands on UI nodes instead of the designated Zscaler API (ZSAPI) nodes. To ensure optimal performance and alignment with our architectural standards, UI nodes will stop servicing Public API calls starting September 01, 2026. This follows the initial announcement of the ZSAPI framework transition made in April 2021 under the section Updates to Cloud Servi...

Apr 16, 4:55 PM

Urgent Maintenance - zscalerone.net

major

Started: Apr 16, 6:27 AM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Friday at 01:00 AM Pacific Time on April 17, 2026 (Friday, April 17, 2026 08:00 AM UTC), and can take up to 4 hours to complete.During maintenance, which includes the control plane, the Admin Portal might be temporarily placed into read-only mode, making the following unavailable: configuration changes, new user provisioning, and existing user updat...

Apr 16, 6:27 AM

Administration UI and User Authentication Issues - zscalerthree.net

major

Started: Apr 16, 3:49 AM

investigating

Zscaler has detected an issue with the administration UI and user authentication on its zscalerthree.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause- The preliminary root cause of this issue is attributed to a fault in the control plane.Latest Update ...

Apr 16, 3:49 AM

New Delhi I (DEL1) Datacenter Network Maintenance - zscloud.net

major

Started: Apr 15, 10:18 PM

investigating

Zscaler will be performing hardware maintenance in the New Delhi I (DEL1) Datacenter.Maintenance window,Start: 2026-04-17 19:30:00 ISTEnd: 2026-04-17 23:30 IST(i.e. 2026-04-17 14:00 - 18:00 UTC)During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.[NOTE: EXTENDING MAINTENANCE AN ADDITIONAL TWO HOURS]Update - Fri, 17 Apr 2026 18:12:50 UTCThis activity has been completed. Please...

Apr 15, 10:18 PM

Upcoming Data Center Expansion in Zpa - private.zscaler.com

major

Started: Apr 15, 9:47 PM

investigating

As part of our regular expansion of capacity, we are adding additional ZPA Public Service Edge nodes to our existing data center in Chicago II (CHI2) for Zpa cloud.These would be available anytime on or after April 15, 2026.RegionLocationNotesAMERICASCHICAGO IIExpansion of Existing DCThe IP addresses for the DC are part of the already published IP address range.Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruptio...

Apr 15, 9:47 PM

Upcoming Data Center Expansions in ZpaTwo - zpatwo.net

major

Started: Apr 15, 9:12 PM

investigating

As part of our regular expansion of capacity, we are adding ZPA Public Service Edge nodes to our new data center in Chicago II (CHI2) for ZpaTwo cloud.These would be available anytime on or after April 15, 2026.RegionLocationNotesAMERICASCHICAGO IINew DCThe IP addresses for the DC are part of the already published IP address range.Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.For more information, please ...

Apr 15, 9:12 PM

Data Center Expansions in ZPATWO - zpatwo.net

major

Started: Apr 15, 8:50 PM

investigating

Dear Zscaler Customer,We would like to notify you of the  public service edge expansions at the locations listed below. These were brought online recently.RegionLocationNotesAPACSydney VNew DCEMEAWarsaw IINew DCThe IP addresses for these DCs are part of the already published IP address range.Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.For more information, please visit:https://config.zscaler.com/zp...

Apr 15, 8:50 PM

Data Center Expansions in ZPA - private.zscaler.com

major

Started: Apr 15, 8:32 PM

investigating

Dear Zscaler Customer,We would like to notify you of the  public service edge expansions at the locations listed below. These were brought online recently. RegionLocationNotesAPACSydney VNew DCEMEAWarsaw IIExpansion of Existing DCThe IP addresses for these DCs are part of the already published IP address range.Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.For more information, please visit:https...

Apr 15, 8:32 PM

New Delhi I (DEL1) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: Apr 15, 5:50 PM

investigating

Zscaler will be performing hardware maintenance in New Delhi I (DEL1) Datacenter.Maintenance window:   Start: 2026-04-20 14:30 UTC   End:  2026-04-20 17:30 UTC   (Local Time 2026-04-20 20:00 - 2026-04-20 23:00 IST)

Apr 15, 5:50 PM

Chennai II (MAA2) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: Apr 15, 5:32 PM

investigating

Zscaler will be performing hardware maintenance in Chennai II (MAA2) Datacenter.Maintenance window:   Start: 2026-04-17 14:30 UTC   End:   2026-04-17 17:30 UTC   (Local Time 2026-04-17 20:00 - 2026-04-17 23:00 IST)

Apr 15, 5:32 PM

Administration UI and Mobile Admin Portal Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 15, 8:37 AM

investigating

Zscaler is currently investigating reported issues impacting the Administration UI and Mobile Admin Portal on the zscaler.net, zscalertwo.net, and zscalerthree.net clouds. Customers may experience intermittent slowness, timeouts, and/or increased latency when accessing the Admin UI and/or Mobile Admin Portal. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP)...

Apr 15, 8:37 AM

Scheduled Maintenance on AMER region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 15, 12:54 AM

investigating

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the AMER region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Sunday at 2:00 AM Pacific Time on Apr 19, 2026 (Sunday, Apr 19, 2026 09:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after ma...

Apr 15, 12:54 AM

Scheduled Maintenance on EMEA region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 15, 12:50 AM

investigating

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the EMEA region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 6:00 PM Pacific Time on Apr 18, 2026 (Sunday, Apr 19, 2026 01:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after ...

Apr 15, 12:50 AM

Scheduled Maintenance on APAC region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 15, 12:48 AM

investigating

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the APAC region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 6:00 AM Pacific Time on Apr 18, 2026 (Saturday, Apr 18, 2026 01:00 PM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available afte...

Apr 15, 12:48 AM

Scheduled Maintenance on Oceania region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 15, 12:43 AM

investigating

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the Oceania region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 2:00 AM Pacific Time on Apr 18, 2026 (Saturday, Apr 18, 2026 09:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available a...

Apr 15, 12:43 AM

Performance Degradation Impacting Case Creation - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

major

Started: Apr 14, 9:06 PM

investigating

Zscaler is currently aware of a performance degradation affecting case creation, associated with a third-party service provider. At this time, core Zscaler services, including the data plane and control plane, continue to operate normally. We are actively collaborating with the impacted service provider, who has acknowledged the issue within their managed infrastructure and is working toward resolution. The service provider has identified the underlying cause and initiated remediation actions...

Apr 14, 9:06 PM

Certificate Signing Request (CSR) Issue - zscaler.net, zscloud.net, zscalerthree.net

major

Started: Apr 14, 2:21 PM

investigating

Zscaler is currently investigating reports of issues with the administration UI on its Cloud. Some customers may be unable to create a new Certificate Signing Request (CSR) because the option is greyed out. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Latest Update - We...

Apr 14, 2:21 PM

Administration UI Issue - zscloud.net

major

Started: Apr 14, 1:57 PM

investigating

Zscaler has detected an issue with the administration UI on its zscloud.net Cloud.  Customers may encounter slowness issues logging into Administration UI and Zscaler Client Connector portal.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause- A surge in authenticat...

Apr 14, 1:57 PM

Brussels (BRU2) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: Apr 13, 9:41 PM

investigating

Zscaler will be performing hardware maintenance in the Brussels II (BRU2) Datacenter.Maintenance window,Start: 2026-04-17 21:00 CESTEnd: 2026-04-17 23:00 CEST(i.e. 2026-04-17 19:00 - 21:00 UTC)During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact. 

Apr 13, 9:41 PM

ZDX Admin Portal – Reporting and Logging Delay - zdxcloud.net

major

Started: Apr 13, 9:16 PM

investigating

Zscaler has detected an issue with Reporting and Logging on its zdxcloud.net Cloud. Customers may experience a temporary delay in reporting data.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root cause- The incident was caused by a performance bottleneck within our backend sy...

Apr 13, 9:16 PM

User Authentication Issues - zscalerthree.net

major

Started: Apr 12, 11:26 PM

investigating

Zscaler has detected an user authentication issue on its zscalerthree.net Cloud. Customer might experience issues with user authentication services, impacting Zscaler Client Connector (ZCC) login, web traffic authentication and Zscaler Client Connector portal.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be pos...

Apr 12, 11:26 PM

Administration UI and User Authentication Issues - zscalerthree.net

major

Started: Apr 11, 2:33 AM

investigating

Zscaler has detected an issue with its zscalerthree.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause: The preliminary root cause of this issue is attributed to a fault in the control plane.Update - Sat, 11 Apr 2026 02:37:12 UTCZscaler observed an issue affe...

Apr 11, 2:33 AM

Munich I Datacenter Scheduled Maintenance - IPv6 Enablement - zscloud.net

major

Started: Apr 10, 11:49 PM

investigating

Zscaler will be enabling IPv6 at our Munich I (MUC1) Data Center.  During the maintenance window the services through MUC1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is April 14, 1:30 pm PDT (April 14, 20:30 UTC)End time is April 14, 6:00 pm PDT (April 15, 1:00 UTC)

Apr 10, 11:49 PM

Scheduled Maintenance Extended - EMEA Region - zscaler.net

major

Started: Apr 10, 10:55 PM

investigating

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the EMEA region data centers on zscaler.net cloud by 3 hours. During this extended maintenance window the ZIA Admin Portal, including policy management and reporting access, and new user authentication should be successful. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed.Update - Sat, 11 Apr 2026 01:02:06 UTCThis activity has b...

Apr 10, 10:55 PM

Atlanta II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

major

Started: Apr 10, 9:15 PM

investigating

Zscaler will be enabling IPv6 at our Atlanta II (ATL2) Data Center.  During the maintenance window the services through ATL2 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is April 16, 6:00 pm PDT (April 17, 1:00 UTC)End time is April 17, 12:00 am PDT (April 17, 7:00 UTC)

Apr 10, 9:15 PM

Auckland II Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net

major

Started: Apr 10, 9:09 PM

investigating

Zscaler will be enabling IPv6 at our Auckland II (AKL2) Data Center.  During the maintenance window the services through AKL2 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is April 16, 6:00 am PDT (April 16, 13:00 UTC)End time is April 16, 11:00 am PDT (April 16, 18:00 UTC)

Apr 10, 9:09 PM

Boston I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net

major

Started: Apr 10, 9:07 PM

investigating

Zscaler will be enabling IPv6 at our Boston I (BOS1) Data Center.  During the maintenance window the services through BOS1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is April 15, 6:00 pm PDT (April 16, 13:00 UTC)End time is April 15, 11:00 pm PDT (April 16, 18:00 UTC)

Apr 10, 9:07 PM

Amsterdam III Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 10, 9:04 PM

investigating

Zscaler will be enabling IPv6 at our Amsterdam III (AMS3) Data Center.  During the maintenance window the services through AMS3 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is April 15, 1:30 pm PDT (April 15, 20:30 UTC)End time is April 15, 6:30 pm PDT (April 16, 1:30 UTC)

Apr 10, 9:04 PM

Tokyo IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscloud.net

major

Started: Apr 10, 8:56 PM

investigating

Zscaler will be enabling IPv6 at our Tokyo IV (TYO4) Data Center.  During the maintenance window the services through TYO4 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is April 14, 9:00 pm PDT (April 14, 16:00 UTC)End time is April 14, 2:00 pm PDT (April 14, 21:00 UTC)

Apr 10, 8:56 PM

Denver III (DEN3) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 10, 7:36 AM

investigating

Zscaler will be performing hardware maintenance in Denver III (DEN3) Datacenter .Maintenance window:   Start: 2026-04-13 05:00 UTC   End:   2026-04-13 08:00 UTC   (Local Time 2026-04-12 23:00 - 2026-04-13 02:00)Update - Mon, 13 Apr 2026 06:03:07 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Apr 10, 7:36 AM

Scheduled Maintenance Extended - EMEA Region - zscloud.net

major

Started: Apr 9, 11:05 PM

investigating

Apr 9, 11:05 PM

China Premium Access Plus Beijing V and Shanghai VI Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 9, 6:48 PM

investigating

Beijing V and Shanghai VI DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus services within these data centres may experience intermittent disconnections.Start Time: 2026-06-05 16:00:00 UTCEnd Time: 2026-06-05 20:00:00 UTC(Datacenter Local Time  2026-06-06 00:00 - 2026-06-06 04:00 China Standard Time (UTC+8:00))Reason of Maintenance: Provider advised maintenance.Impact During Maintenance: Intermittent connectivity might ...

Apr 9, 6:48 PM

Urgent Maintenance - zscalerone.net

major

Started: Apr 9, 6:41 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Friday at 01:00 AM Pacific Time on April 10, 2026 (Friday, April 10, 2026 08:00 AM UTC), and can take up to 4 hours to complete.During maintenance, which includes the control plane, the Admin Portal might be temporarily placed into read-only mode, making the following unavailable: configuration changes, new user provisioning, and existing user updat...

Apr 9, 6:41 PM

Urgent Maintenance - zdxcloud.net

major

Started: Apr 9, 6:24 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Thursday at 03:00 PM Pacific Time on April 9, 2026 (Thursday, April 9, 2026 10:00 PM UTC), and can take up to 2 hours to complete.During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be col...

Apr 9, 6:24 PM

Chicago I (CHI1) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net

major

Started: Apr 9, 3:04 PM

investigating

Zscaler will be performing hardware maintenance in the Chicago I (CHI1) Datacenter.Maintenance window,Start: 2026-4-13 03:00 CDTEnd: 2026-4-13 05:00 CDT(i.e. 2026-4-13 08:00 - 10:00 UTC)No service impact is expected during this maintenance. 

Apr 9, 3:04 PM

Maintenance Window Updates - zscalerthree.net

major

Started: Apr 9, 12:58 AM

investigating

Zscaler is updating the maintenance window schedule for Oceania, APAC and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring.Time (in UTC- Coordinated Universal Time)REGIONMONTUESWEDTHUFRISATSUNOceania 9:00 AM – 11:00 AM9:00 AM – 11:00 AM9:00 AM – 12:00 PM 9:00 AM – 12:00 PM Asia Pacific8:00 PM – 10:00 PM8:00 PM – 10:00 PM8:00 PM – 10:00 PM4:00 PM – 7:00 PM 1:00 PM - 4:00 PM3:00 PM – 6:00...

Apr 9, 12:58 AM

Maintenance Window Updates - zscloud.net

major

Started: Apr 9, 12:49 AM

investigating

Zscaler is updating the maintenance window schedule for Oceania, APAC and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring. Time(in UTC- Coordinated Universal Time)REGIONMONTUESWEDTHUFRISATSUNOceania 9:00 AM – 11:00 AM9:00 AM – 11:00 AM9:00 AM – 12:00 PM 9:00 AM – 12:00 PM Asia Pacific8:00 PM – 10:00 PM8:00 PM – 10:00 PM8:00 PM – 10:00 PM4:00 PM – 7:00 PM 1:00 PM - 4:00 PM3:00 PM –...

Apr 9, 12:49 AM

Maintenance Window Updates - zscalertwo.net

major

Started: Apr 9, 12:20 AM

investigating

Zscaler is updating the maintenance window schedule for Oceania, EMEA and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring.Time (in UTC- Coordinated Universal Time)REGIONMONTUESWEDTHUFRISATSUNOceania 9:00 AM – 11:00 AM9:00 AM – 11:00 AM 9:00 AM – 12:00 PM9:00 AM – 12:00 PM Asia Pacific8:00 PM – 10:00 PM8:00 PM – 10:00 PM8:00 PM – 10:00 PM 4:00 PM – 7:00 PM1:00 PM -4:00 PM EMEA8:00 PM...

Apr 9, 12:20 AM

Maintenance Window Updates - zscaler.net

major

Started: Apr 8, 11:29 PM

investigating

Zscaler is updating the maintenance window schedule for Oceania, APAC, EMEA and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring.Time (in UTC- Coordinated Universal Time)REGIONMONTUESWEDTHUFRISATSUNOceania 9:00 AM – 11:00 AM9:00 AM – 11:00 AM 9:00 AM – 12:00 PM9:00 AM– 12:00 PM9:00 AM– 12:00 PMAsia Pacific8:00 PM – 10:00 PM8:00 PM – 10:00 PM8:00 PM – 10:00 PM 4:00 PM – 7:00 PM1:00 PM– 4:00...

Apr 8, 11:29 PM

Maintenance Window Updates - zscalerone.net

major

Started: Apr 8, 10:37 PM

investigating

Zscaler is updating the maintenance window schedule for Oceania, EMEA and AMER regions. The new schedule is effective starting April 23, 2026. Service updates for all regions will be recurring.Time(in UTC- Coordinated Universal Time)REGIONMONTUESWEDTHUFRISATSUNOceania 9:00 AM – 11:00 AM9:00 AM – 11:00 AM 9:00 AM – 12:00 PM9:00 AM – 12:00 PM EMEA      1:00 AM– 4:00 AMAMER 6:00 AM – 8:00 AM6:00 AM – 8:00 AM6:00 AM – 8:00 AM ...

Apr 8, 10:37 PM

Delay in Processing Inbound Emails to Support Cases - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

major

Started: Apr 8, 7:05 PM

investigating

Zscaler is aware of an issue impacting delay in processing inbound emails to support cases.Zscaler services are operating normally; delays are currently impacting the synchronization of inbound email communications related to support cases. This is due to a dependency issue with our service provider that is affecting email processing, leading to slower updates. Zscaler is actively coordinating with the service provider to restore normal functionality.Impact: During this time, customers m...

Apr 8, 7:05 PM

Scheduled Maintenance - zscaler.net

major

Started: Apr 8, 6:17 PM

investigating

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on zscaler.net cloud. This maintenance is scheduled for Saturday at 06:00 AM Pacific Time on April 11, 2026 (Saturday, April 11, 2026 01:00 PM UTC), and can take up to 4 hours to complete.During maintenance, which includes the control plane, the Admin Portal might be temporarily placed into read-only mode, making the following unavailable: configuration changes, new user provisioning, and existing user up...

Apr 8, 6:17 PM

IdP-initiated Authentication Issue - zscaler.net, zscloud.net

major

Started: Apr 8, 9:35 AM

investigating

Zscaler is currently investigating reports of issues with its zscaler.net, zscloud.net Cloud. Customers using IdP-initiated authentication may experience login failures.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause: The issue occurred due to a recently enabled feat...

Apr 8, 9:35 AM

Kolkata I (CCU1) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: Apr 8, 7:19 AM

investigating

Zscaler will be performing hardware maintenance in Kolkata I (CCU1) Datacenter.Maintenance window:   Start: 2026-04-14 14:30 UTC   End:   2026-04-14 17:30 UTC   (Local Time 2026-04-14 20:00 - 2026-04-14 23:00 IST)

Apr 8, 7:19 AM

London V Datacenter Scheduled Maintenance - IPv6 Enablement - zscalertwo.net

major

Started: Apr 7, 8:53 PM

investigating

Zscaler will be enabling IPv6 at our London V (LON5) Data Center.  During the maintenance window the services through LON5 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is April 10, 2:00 pm PDT (April 10, 21:00 UTC)End time is April 10, 6:00 pm PDT (April 11, 1:00 UTC)Update 4/8: Maintenance Window Updated 

Apr 7, 8:53 PM

IdP-initiated Authentication Issue - zscaler.net, zscloud.net

major

Started: Apr 7, 3:13 PM

investigating

Zscaler is currently investigating reports of issues with its zscaler.net, zscloud.net Cloud.  Customers using IdP-initiated authentication may experience login failures.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause - The issue occurred due to a recently enabl...

Apr 7, 3:13 PM

Munich I Datacenter Scheduled Maintenance – IPv6 Enablement - zscloud.net

major

Started: Apr 6, 7:16 PM

investigating

Zscaler will perform scheduled maintenance at our Munich I (MUC1) Data Center to complete preparatory work for future IPv6 enablement. During the maintenance window, services through the MUC1 Data Center may be restarted in phases to minimize impact.Other Zscaler sites and services will continue to operate normally.Maintenance Window:Start time is April 7, 1:00 pm PDT (April 7,  20:00 UTC)End time is April 7, 6:00 pm PDT (April 8, 1:00 UTC)Update - Tue, 07 Apr 2026 23:41:56 UTCThis activ...

Apr 6, 7:16 PM

China Premium Access Plus Beijing V and Shanghai VI Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 6, 4:42 PM

investigating

Beijing V and Shanghai VI DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus services within these data centres may experience intermittent disconnections.Start Time: 2026-04-12 12:00:00 UTCEnd Time: 2026-04-12 14:00:00 UTC(Datacenter Local Time  2026-04-12 20:00 - 2026-04-12 22:00 China Standard Time (UTC+8:00))Reason of Maintenance: Provider advised maintenance.Impact During Maintenance: Intermittent connectivity might ...

Apr 6, 4:42 PM

Atlanta III (ATL3) Datacenter Network Maintenance - zscaler.net

major

Started: Apr 6, 4:11 PM

investigating

Zscaler will be performing hardware maintenance in the Atlanta III (ATL3) Datacenter.Maintenance window,Start: 2026-4-7 18:00 ESTEnd: 2026-4-7 20:00 EST(i.e. 2026-4-7 22:00 - 2026-4-8 00:00 UTC)During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Apr 6, 4:11 PM

Urgent Maintenance on zdxcloud.net - zdxcloud.net

major

Started: Apr 5, 6:02 AM

investigating

The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Sunday at 06:15 AM UTC on April 05, 2026, and can take up to 1 hour to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.Update - Sun, 05 Apr ...

Apr 5, 6:02 AM

ZDX Admin Portal – Reporting and Logging Delay - zdxcloud.net

major

Started: Apr 5, 4:40 AM

investigating

Zscaler has detected an issue with the ZDX cloud. Customers may experience a temporary delay in reporting data.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Latest Update - Mon, 06 Apr 2026 03:31:53 UTCNo issues have been observed during the monitoring period. We have applied...

Apr 5, 4:40 AM

ZDX Admin Portal – Reporting and Logging Delay - zdxcloud.net

major

Started: Apr 4, 5:31 PM

investigating

Zscaler has detected an issue impacting connectivity between client connector and ZDX cloud. Customers may experience a temporary delay in reporting data.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root cause: A service component within the ZDX cloud was unable to process u...

Apr 4, 5:31 PM

Private Service Edge (PSE) – Intermittent Traffic Blocking for Explicit Proxy Traffic - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 4, 5:10 PM

investigating

Zscaler is aware of and actively investigating an issue impacting a subset of customers using Private Service Edge (PSE). Some customers are experiencing intermittent traffic blocking when accessing websites through PSE. Affected requests may return the error: "Web Application Blocked by Firewall Rule."We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status cha...

Apr 4, 5:10 PM

Urgent Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zdxcloud.net

major

Started: Apr 4, 12:27 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance during which access to the Zscaler Management Portal for Partners and ZDX Admin Portal might not be available. This maintenance is scheduled for Saturday at 05:45 AM Pacific Time on April 04, 2026 (Saturday, April 04, 2026 12:45 PM UTC), and can take up to 2 hours to complete. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questi...

Apr 4, 12:27 PM

London V Datacenter Scheduled Maintenance - Service Expansion - zscaler.net

major

Started: Apr 3, 10:08 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our London V (LON5) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscaler.net/cenrMaintenance Window:Start time is April 9, 1:00 pm PDT (April 9, 20:00 UTC)End time is April 9, 6:00 pm...

Apr 3, 10:08 PM

Montreal I Datacenter Scheduled Maintenance - Service Expansion - zscalerthree.net

major

Started: Apr 3, 10:02 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Montreal I (YMQ1) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscalerthree.net/cenrMaintenance Window:Start time is April 8, 6:00 pm PDT (April 9, 1:00 UTC)End time is April 8, 1...

Apr 3, 10:02 PM

Axios Supply Chain Attack Update - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

major

Started: Apr 3, 5:10 PM

investigating

Zscaler has analyzed the supply chain compromises affecting the Axios npm packages. Analysis confirms no impact to Zscaler platforms, products, or internal systems.As a best practice, customers should review their environments for the following impacted versions:Axios npm package versions: 1.14.1 and 0.30.4Actions if you have an impacted version:Update/Revert: Revert or pin Axios to known safe versions (e.g., 1.14.0 or 0.30.3)Rotate Credentials: Update all API keys, cloud token...

Apr 3, 5:10 PM

User Authentication Issue on Kingdom of Saudi Arabia I datacenter - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Apr 2, 11:15 AM

investigating

Zscaler has detected an issue with its Kingdom of Saudi Arabia I datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal ...

Apr 2, 11:15 AM

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

major

Started: Apr 2, 7:46 AM

investigating

We will be performing planned maintenance on our platform infrastructure in the Prod US region to enhance availability and resiliency.  Some customers may witness below impact during this maintenance window:Momentary disconnect and auto-reconnect of zcc.Any active session will be disconnected and logged under ZPA User Activity logs as “MT_CLOSED_TLS_CONN_GONE_SCIM_USER_MOVED”Important Note: No action is required from customers and this communication is only intended to info...

Apr 2, 7:46 AM

Upcoming New Data Centers and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: Apr 1, 10:47 PM

investigating

Dear Zscaler Customer,In accordance with Zscaler Service Continuity Policy and per email notification sent on April 1, 2026, we would like to notify you of the upcoming new data centers and expansions at the locations listed below. These would be available anytime on or after May 31, 2026; 60 days or more from the date the first email notification is sent.Please update your firewall policy rules and any upstream Access Control Lists (ACLs) to allow the new IP address ranges to avoid...

Apr 1, 10:47 PM

Scheduled Maintenance - zscalerthree.net

major

Started: Apr 1, 6:11 PM

investigating

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on zscalerthree.net cloud. This maintenance is scheduled for Saturday at 07:00 AM Pacific Time on April 4, 2026 (Saturday, April 4, 2026 02:00 PM UTC), and can take up to 4 hours to complete.During maintenance, which includes the control plane, the Admin Portal might be temporarily placed into read-only mode, making the following unavailable: configuration changes, new user provisioning, and existing user...

Apr 1, 6:11 PM

Zurich I Datacenter Scheduled Maintenance - Service Expansion - zscloud.net

major

Started: Apr 1, 5:14 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Zurich I (ZRH1) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscloud.net/cenrMaintenance Window:Start time is April 2, 1:30 pm PDT (April 2, 20:30 UTC)End time is April 2, 4:30 pm...

Apr 1, 5:14 PM

Chennai II, Hyderabad I, Mumbai VI, Mumbai VII, New Delhi I Datacenter Issue - zscalerthree.net

major

Started: Apr 1, 10:36 AM

investigating

Zscaler has detected an issue with its Chennai II, Hyderabad I, Mumbai VI, Mumbai VII, New Delhi I datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional det...

Apr 1, 10:36 AM

March 2026

Montreal I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 31, 11:59 PM

investigating

Zscaler will be enabling IPv6 at our Montreal I (YMQ1) Data Center.  During the maintenance window the services through YMQ1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is April 1, 6:00 pm PDT (April 2, 1:00 UTC)End time is April 1, 11:00 pm PDT (April 2, 6:00 UTC)Update - Thu, 02 Apr 2026 04:19:00 UTCThis activity has been completed. Please contact Zscaler ...

Mar 31, 11:59 PM

Action Required — Verify/Correct Your Z-Identity IdP “Primary Email” Attribute Mapping - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

major

Started: Mar 31, 6:45 AM

investigating

Zscaler is proactively reaching out to help prevent potential login failures to the Z-Identity Admin Console when authenticating through your Identity Provider (IdP). Based on monitoring, your tenant may be missing or mis-mapping the required Primary Email attribute used during JIT (Just-In-Time) provisioning.This advisory relates to the recent incident and follow-up corrective actions (Reference: Trust Post: Z-Identity Portal Issue).What is the issue?On Mar...

Mar 31, 6:45 AM

Administration UI and User Authentication Issues - zscalertwo.net

major

Started: Mar 31, 4:56 AM

investigating

Zscaler has detected an issue with the administration UI and user authentication on its zscalertwo.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause: The preliminary root cause of this issue is attributed to a fault in the control plane.Latest Update - ...

Mar 31, 4:56 AM

Urgent Maintenance on Mumbai VI and New Delhi I datacenters - zscalerthree.net

major

Started: Mar 30, 11:14 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Mumbai VI and New Delhi I datacenters on the zscalerthree.net cloud. This maintenance is scheduled for Monday at 4:30 PM Pacific Time on March 30, 2026 (Monday, March 30, 2026 11:30 PM UTC), and can take up to 2 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Sup...

Mar 30, 11:14 PM

Zurich I Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 30, 9:54 PM

investigating

Zscaler will be enabling IPv6 at our Zurich I (ZRH1) Data Center.  During the maintenance window the services through ZRH1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is April 1, 1:30 pm PDT (April 1, 20:30 UTC)End time is April 1, 5:30 pm PDT (April 2, 0:30 UTC)Update 3/31: Maintenance postponed

Mar 30, 9:54 PM

Customer Support Portal (CSP) Login Issues - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net

major

Started: Mar 30, 9:03 PM

investigating

Zscaler is currently investigating an issue impacting Customer Support Portal (CSP) access for a subset of customers. Affected customers may encounter the error message: “Can’t connect to Zscaler Support” when attempting to log in to the CSP.Workaround: While a fix is being implemented, customers may use the following alternative methods:If you have Administrative access to another Zscaler product (such as ZIA, ZPA, or ZDX), you can access the Support Portal through that produ...

Mar 30, 9:03 PM

São Paulo IV (SAO4) Critical Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net

major

Started: Mar 30, 7:28 PM

investigating

Zscaler will be performing critical hardware maintenance in the São Paulo IV (SAO4) Datacenter.Maintenance window,Start: 2026-4-2 18:00 GMT-3End: 2026-4-2 22:00 GMT-3(i.e. 2026-4-2 21:00 - 2026-4-3 01:00 UTC)During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Mar 30, 7:28 PM

Reminder Notification For New Data Center and Old CIDR Deprecation - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: Mar 30, 6:53 PM

investigating

Dear Customer, In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on February 10, 2026, we would like to remind you of the upcoming new data center at the location listed below. This would be available anytime on or after April 11, 2026.Please update your firewall policy rules and any upstream access lists to allow the new IP address ranges to avoid any service disruption.RegionLocationCIDRNotesAm...

Mar 30, 6:53 PM

ZIA Platform Alerts – Email Notifications Not Being Delivered - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 27, 9:26 PM

investigating

Zscaler is investigating an issue impacting email notifications for Platform Alerts configured within the ZIA Admin Portal (Under Administration > Define Alerts Page > Alerts). Customers may not be receiving email notifications for alert-triggering events. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be ...

Mar 27, 9:26 PM

Planned Maintenance Activity for ZPA authentication service - private.zscaler.com

major

Started: Mar 27, 11:04 AM

investigating

We will be performing planned maintenance on our ZPA authentication platform infrastructure to enhance availability and resiliency. Customers may witness authentication issue while login to Admin UI or Public API during this maintenance window.Important Note: No action is required from customers and this communication is only intended to inform in advance.Please reach out to support if you have any questions or require further clarification.Update - Sat, 28 Mar 2026 03:34:33 UTCThis activity ...

Mar 27, 11:04 AM

Urgent Maintenance - zscalertwo.net

major

Started: Mar 27, 5:15 AM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalertwo.net cloud. This maintenance is scheduled for Thursday at 10:30 PM Pacific Time on March 26, 2026 (Friday, March 27, 2026 05:30 AM UTC), and can take up to 30 minutes to complete.During the maintenance, the ZIA Admin Portal, and access to policy management will not be available. A brief impact to new user authentication might occur. However, all the logs that are collected during this period wi...

Mar 27, 5:15 AM

Experience Center – SSO Error When Accessing Support Tab - zslogin.net

major

Started: Mar 27, 12:53 AM

investigating

Zscaler is investigating an issue impacting Experience Center customers, where users may encounter an SSO error when navigating to the Support tab within the Experience Portal.Impact: Customers attempting to access the Support tab through the Experience Center portal may be unable to successfully authenticate via SSO. All other platform functionalities remain unaffected.Workaround:Customers can continue to access the Support Portal using the following validated workaround:Log in to an alterna...

Mar 27, 12:53 AM

China Premium Access Plus Shanghai Datacenter (Shanghai VI) Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 26, 10:06 PM

investigating

Shanghai VI DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus services within these data centres may experience intermittent disconnections.Start Time: 2026-04-08 14:00:00 UTCEnd Time: 2026-04-08 15:00:00 UTC(Datacenter Local Time  2026-04-08 22:00 - 2026-04-08 23:00 China Standard Time (UTC+8:00))Reason of Maintenance: Provider advised maintenance.Impact During Maintenance: Intermittent connectivity might be observed du...

Mar 26, 10:06 PM

Upcoming Extranet Virtual IP Address Announcement - zscloud.net

major

Started: Mar 26, 9:55 PM

investigating

Dear Zscaler Customer,In accordance with Zscaler Service Continuity Policy and per email notification sent on March 26, 2026, we would like to notify you of the new Virtual IP addresses (VIPs) for the Zscaler Extranet Application Support rollout.These new Extranet  VIPs can be used to terminate IPSec VPN tunnels with Extranet connectivity at the locations listed below. The VIPs will be displayed on the Zscaler Config page for ease of access and visibility.&n...

Mar 26, 9:55 PM

Upcoming Extranet Virtual IP Address Announcement - zscalerthree.net

major

Started: Mar 26, 9:49 PM

investigating

Dear Zscaler Customer,In accordance with Zscaler Service Continuity Policy and per email notification sent on March 26, 2026, we would like to notify you of the new Virtual IP addresses (VIPs) for the Zscaler Extranet Application Support rollout.These new Extranet VIPs can be used to terminate IPSec VPN tunnels with Extranet connectivity at the locations listed below. The VIPs will be displayed on the Zscaler Config page for ease of access and visibility. Us...

Mar 26, 9:49 PM

Upcoming Extranet Virtual IP Address Announcement - zscalertwo.net

major

Started: Mar 26, 9:43 PM

investigating

Dear Zscaler Customer,In accordance with Zscaler Service Continuity Policy and per email notification sent on March 26, 2026, we would like to notify you of the new Virtual IP addresses (VIPs) for the Zscaler Extranet Application Support rollout.These new Extranet VIPs can be used to terminate IPSec VPN tunnels with Extranet connectivity at the locations listed below. The VIPs will be displayed on the Zscaler Config page for ease of access and visibility. Us...

Mar 26, 9:43 PM

Upcoming Extranet Virtual IP Address Announcement - zscaler.net

major

Started: Mar 26, 9:37 PM

investigating

Dear Zscaler Customer,In accordance with Zscaler Service Continuity Policy and per email notification sent on March 26, 2026, we would like to notify you of the new Virtual IP addresses (VIPs) for the Zscaler Extranet Application Support rollout.These new Extranet VIPs addresses can be used to terminate IPSec VPN tunnels with Extranet connectivity at the locations listed below. The VIPs will be displayed on the Zscaler Config page for ease of access and visibilit...

Mar 26, 9:37 PM

Trivy and LiteLLM Supply Chain Incident (CVE-2026-33634) Update - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

major

Started: Mar 26, 9:18 PM

investigating

Zscaler has analyzed the supply chain compromises affecting the Trivy security scanner and LiteLLM. Analysis confirms no impact to Zscaler platforms, products, or internal systems, including AI Guard.As a best practice customers should review their environments for the following impacted versions:Trivy: Container images v0.69.5–v0.69.6LiteLLM: Versions 1.82.7 and 1.82.8.Actions if you have an impacted version:Update/Revert: Upgrade Trivy to v0.69.7 or late...

Mar 26, 9:18 PM

Frankfurt VI Datacenter Scheduled Maintenance - zscaler.net

major

Started: Mar 26, 6:59 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Frankfurt VI (FRA6) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscaler.net/cenrMaintenance Window:Start time is March 27, 3:00 pm PDT (March 27, 22:00 UTC)End time is  Marc...

Mar 26, 6:59 PM

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

major

Started: Mar 26, 7:44 AM

investigating

Mar 26, 7:44 AM

Cloud Browser Isolation issue for Frankfurt Region - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: Mar 25, 2:27 PM

investigating

Zscaler has identified an issue with Cloud Browser Isolation (CBI) impacting customers in Frankfurt Region. Affected customers may experience issue with new isolation session for Frankfurt region.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Update - Wed, 25 Mar 2026 14:36:16...

Mar 25, 2:27 PM

Oslo III Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 25, 1:06 PM

investigating

Zscaler has detected an issue with its Oslo III datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status cha...

Mar 25, 1:06 PM

Urgent Oslo III (OSL3) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: Mar 25, 10:49 AM

investigating

Zscaler will be performing hardware maintenance in the Oslo III (OSL3) Datacenter.Maintenance window,Start: 2026-03-25 13:00 CESTEnd: 2026-03-25 16:00 CEST(i.e. 2026-03-25 12:00 - 2026-03-25 15:00 UTC)Update - Wed, 25 Mar 2026 13:58:57 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 25, 10:49 AM

Mumbai VI (BOM6) Datacenter Network Maintenance - zscaler.net

major

Started: Mar 25, 8:52 AM

investigating

Zscaler will be performing hardware maintenance in Mumbai VI (BOM6) Datacenter .Maintenance window:   Start: 2026-03-27 12:30 UTC   End:   2026-03-27 14:30 UTC   (Local Time 2026-03-27 18:00 - 2026-03-27 20:00 IST)

Mar 25, 8:52 AM

Los Angeles I Datacenter Scheduled Maintenance - zscalertwo.net

major

Started: Mar 25, 7:22 AM

investigating

Zscaler will be performing hardware maintenance in Los Angeles I (QLA1) Datacenter.Maintenance window:   Start: 2026-03-26 02:00 UTC   End:   2026-03-26 04:00 UTC   (Local Time 2026-03-25 19:00 - 2026-03-25  21:00)Update - Thu, 26 Mar 2026 03:59:14 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 25, 7:22 AM

Reminder Notification for Upcoming Data Center Expansion - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: Mar 23, 7:11 PM

investigating

Dear Customer, In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on February 4, 2026, we would like to remind you of the upcoming data center expansion at the location listed below. These would be effective anytime on or after April 5, 2026.Please update your firewall policy rules and any upstream access control lists to allow the new IP address ranges to avoid any service disruption.RegionLocationCID...

Mar 23, 7:11 PM

Reminder Notification for Additions of HUB IP Address Ranges - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zdxcloud.net

major

Started: Mar 23, 6:56 PM

investigating

Dear Customer, In accordance with Zscaler Service Continuity Policy and as previously announced via Trust and email notification sent on February 4, 2026, we would like to remind you of the upcoming changes to HUB IP address ranges as listed below. The services through the new IP address range will be available anytime on or after April 5, 2026.CIDRNotes205.220.118.0/23New addition to Required Hub IP addresses101.2.244.0/23New addition to Required Hub I...

Mar 23, 6:56 PM

Abu Dhabi I and Dubai II Data Center Issue - zscloud.net

major

Started: Mar 23, 6:31 AM

investigating

Zscaler has detected an issue with its Abu Dhabi I and Dubai II datacenter on the zcloud.net cloud and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler c...

Mar 23, 6:31 AM

Dubai I Data Center Issue - zscloud.net

major

Started: Mar 23, 5:50 AM

investigating

Zscaler has detected an issue with its Dubai I datacenter on zscloud.net and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CS...

Mar 23, 5:50 AM

Canberra I Data Center Issue - zscalerthree.net

major

Started: Mar 23, 4:47 AM

investigating

Zscaler has detected an issue with its Canberra I datacenter on the zscalerthree.net cloud and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer ...

Mar 23, 4:47 AM

San Francisco IV (SJC4) Datacenter Network Maintenance - zscalertwo.net, zscalerthree.net

major

Started: Mar 23, 2:01 AM

investigating

Zscaler will be performing hardware maintenance in San Francisco IV (SJC4) Datacenter.Maintenance window:   Start:  2026-03-25 03:30 UTC   End:    2026-03-25 06:30 UTC   (Local Time 2026-03-24 20:30 - 2026-03-24 23:30)Update - Wed, 25 Mar 2026 04:00:53 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 23, 2:01 AM

ZIdentity Portal Issue - zslogin.net

major

Started: Mar 21, 11:35 AM

investigating

Zscaler is investigating an issue with the ZIdentity Portal on the zslogin.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root cause- The issue occurred due to a recent service update.Update - Sat, 21 Mar 2026 12:10:56 UTCThe Zscaler team has identified the root cau...

Mar 21, 11:35 AM

Capetown IV Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 21, 11:12 AM

investigating

Zscaler has detected an issue with our Capetown IV datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status ...

Mar 21, 11:12 AM

CBI Original URL Experience Degradation - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 20, 9:17 PM

investigating

Zscaler is actively implementing mitigation measures for an intermittent, low-impact issue affecting the Zscaler Internet Access (ZIA) Service Edge.  As part of our troubleshooting and remediation process, we are making adjustments to a specific feature indicated by our data to be triggering the issue.  As a result, some Cloud Browser Isolation (CBI) customers who have enabled the newly released Original URL feature in their Isolation Profile may periodically still see the full...

Mar 20, 9:17 PM

Rio de Janeiro I Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 20, 6:52 PM

investigating

Zscaler will be enabling IPv6 at our Rio de Janeiro I (RIO1) Data Center.  During the maintenance window the services through RIO1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is March 23, 2:00 pm PST (March 23, 21:00 UTC)End time is March 23, 7:00 pm PST (March 24, 2:00 UTC)Update 3/23: Maintenance Postponed

Mar 20, 6:52 PM

Atlanta III Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscloud.net

major

Started: Mar 20, 6:44 PM

investigating

Zscaler will be enabling IPv6 at our Atlanta III (ATL3) Data Center.  During the maintenance window the services through ATL3 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is March 23, 6:00 pm PST (March 24, 1:00 UTC)End time is March 23, 11:00 pm PST (March 24, 6:00 UTC)

Mar 20, 6:44 PM

Urgent Maintenance - zscaler.net

major

Started: Mar 20, 4:37 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Atlanta II, Atlanta III, Los Angeles, Los Angeles II datacenter on the zscaler.net cloud. This maintenance can take up to 2 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.Update - Fri, 20 Mar 2026 18:06:31 UTCThis activit...

Mar 20, 4:37 PM

Urgent Maintenance on Dusseldorf 1 and Frankfurt 6 datacenters - zscaler.net

major

Started: Mar 20, 6:09 AM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Dusseldorf 1 and Frankfurt 6 datacenters on the zscaler.net cloud. This maintenance is scheduled for Thursday at 11:30 PM Pacific Time on March 19, 2026 (Friday, March 20, 2026 6:30 AM UTC), and can take up to 1 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Sup...

Mar 20, 6:09 AM

Urgent Maintenance - AMER Region - zscalertwo.net

major

Started: Mar 20, 12:26 AM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the AMER region's datacenters of zscalertwo.net cloud. This maintenance is scheduled for Thursday at 9:00 PM Pacific Time on Mar 19, 2026 (Friday, Mar 20, 2026 4:00 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have addi...

Mar 20, 12:26 AM

Urgent Maintenance on New York 3 and 4 datacenters - zscaler.net

major

Started: Mar 19, 8:01 AM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the New York 3 and 4 datacenter on the zscaler.net cloud. This maintenance is scheduled for Thursday at 1:30 AM Pacific Time on March 19, 2026 (Thursday, March 19, 2026 8:30 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you ...

Mar 19, 8:01 AM

User Authentication Issue on Sao Paulo II - zscaler.net, zscalertwo.net, zscloud.net

major

Started: Mar 19, 4:47 AM

investigating

Zscaler has detected an issue with its Sao Paulo II datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status...

Mar 19, 4:47 AM

Planned Maintenance Activity for ZPA authentication service - private.zscaler.com

major

Started: Mar 19, 4:43 AM

investigating

We will be performing planned maintenance on our ZPA authentication platform infrastructure to enhance availability and resiliency.  Some customers may witness below impact during this maintenance window:Brief retries or elevated latency for new auth requests might be seen during connection re‑establishment.Transient errors during auth is possible; retry should succeed.Important Note: No action is required from customers and this communication is only intended to inform in advance.Plea...

Mar 19, 4:43 AM

Sydney V Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 18, 9:28 PM

investigating

Dear Zscaler Customer,You are receiving this notice in accordance with the Zscaler Service Continuity Policy.As part of our effort to enhance our Security Cloud’s robustness and performance, Zscaler will be bringing online a new Sydney V (SYD5) data center. This facility will be added to the public resolution service (Auto Geo Proximity) on March 19, 2026What if I have more questions? Contact Zscaler Support via the “Support” link at the top-right of the Zscaler...

Mar 18, 9:28 PM

Zscaler Client Connector (ZCC) Authentication Issues - zscalerone.net

major

Started: Mar 18, 7:32 PM

investigating

Zscaler is aware and investigating reports on an issue with ZCC Network errors on its zscalerone.net Cloud. Affected users may experience 'network connection failed' errors when attempting to log into Zscaler Client Connector (ZCC). Users who are already logged in can access services normally.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and a...

Mar 18, 7:32 PM

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

major

Started: Mar 18, 10:33 AM

investigating

Mar 18, 10:33 AM

San Francisco IV (SJC4) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

major

Started: Mar 17, 6:34 PM

investigating

Zscaler will be performing hardware maintenance in San Francisco IV (SJC4) Datacenter.Maintenance window:   Start: 2026-03-19 06:00 UTC   End:   2026-03-19 14:00 UTC   (Local Time 2026-03-18 23:00 - 2026-03-19 07:00)Update - Thu, 19 Mar 2026 11:59:25 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 17, 6:34 PM

SaaS Application Activity Data Not Displaying in Activity Logs - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 16, 9:54 PM

investigating

Activity Logs are currently not displaying SaaS application activity data. Zscaler is actively working to resolve this issue.Who is impacted?ZIA customers who have onboarded and configured Data-at-Rest scanning for SaaS applications may temporarily be unable to view SaaS-related activity data in Activity Logs.When will this be resolved?A fix is currently being deployed and is expected to be completed across all Zscaler clouds by March 22, 2026.What are my next steps?No action is required from...

Mar 16, 9:54 PM

Deprecation of Individual Administrative UIs - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, zslogin.net

major

Started: Mar 16, 6:33 PM

investigating

What is changing?Zscaler is deprecating individual administrative User Interfaces (UIs). Customers must migrate to ZIdentity and Experience Center, Zscaler’s centralized administrative and insights platform, to take advantage of new features and innovations.Who is impacted?All customers not currently using ZIdentity for administrative purposes must complete the migration to have access to new features and innovations.Key InformationAccess Experience Center: To use the latest administrative ...

Mar 16, 6:33 PM

Zscaler Microsegmentation Log Forwarding Issue - private.zscaler.com

major

Started: Mar 16, 5:24 PM

investigating

Zscaler is investigating an issue with the Zscaler Microegmentation's log forwarding service via Log Streaming Service (LSS) on its private.zscaler.com cloud. The logs forwarding via LSS is temporarily disabled. This does not impact the core Microsegmentation functionality and all the logs will continue to be visible in the Administration UI.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler c...

Mar 16, 5:24 PM

Sitereview Portal Validation Update - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

major

Started: Mar 16, 2:10 PM

investigating

Site review is used by customers and their users to submit URL categorization and review requests to Zscaler. To provide a more secure environment for our ZIA customers, Zscaler is refining how the Site review portal authorizes URL recategorization and review requests. Previously, the portal accepted requests if either the Source IP or the X Forwarded For header belonged to a Zscaler IP address range. As part of a security enhancement, we are removing reliance on the X Forwarde...

Mar 16, 2:10 PM

Zscaler Client Connector Portal Issue - zscaler.net, zscloud.net, zscalerthree.net

major

Started: Mar 16, 7:23 AM

investigating

Zscaler has detected an issue with Zscaler Client Connector Portal Issue on its zscalerthree.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root cause- The issue was caused by a software defect introduced during a recent system update.Latest Update - Mon, 16 Mar 202...

Mar 16, 7:23 AM

Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.zsdpc.net

major

Started: Mar 16, 4:06 AM

investigating

Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on March 16th, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes. Update - Mon, 16 Mar 2026 05:52:18 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 16, 4:06 AM

Urgent Maintenance - VZEN nodes - zscalertwo.net

major

Started: Mar 15, 1:33 AM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the VZEN nodes in zscalertwo.net cloud. The maintenance will happen across VZEN nodes during the window, beginning at 06:30 PM Pacific Time on Saturday, March 14, 2026 (Sunday, March 15, 2026 01:30 AM UTC) and continuing for up to 5 hours. VZEN's services will be restarted as part of this change and service for your end users might be disrupted during the window. All logs will be collected and available ...

Mar 15, 1:33 AM

Urgent Maintenance on Zurich datacenter - zscloud.net

major

Started: Mar 14, 4:54 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Zurich datacenter on the zscloud.net cloud. This maintenance is scheduled for Saturday at 1:00 PM Pacific Time on March 14, 2026 (Saturday, March 14, 2026 8:00 PM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have addit...

Mar 14, 4:54 PM

Zscaler Client Connector-Based End User Notifications Issue - zscaler.net

major

Started: Mar 14, 5:59 AM

investigating

Zscaler has detected an issue with Zscaler Client Connector-Based End User Notifications on its zscaler.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Resolved-  Issue was related to node.Update - Sat, 14 Mar 2026 06:52:20 UTCZscaler has implemented mitiga...

Mar 14, 5:59 AM

Scheduled Maintenance Extended - zscaler.net

major

Started: Mar 14, 5:45 AM

investigating

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscaler.net cloud by 2 hour. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.Update - Sat, 14 Mar 2026 08:00:18 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 14, 5:45 AM

Dubai I Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscalerthree.net

major

Started: Mar 14, 1:30 AM

investigating

Zscaler will be enabling IPv6 at our Dubai I  (DXB1) Data Center.  During the maintenance window the services through DXB1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is March 19, 9:00 am PST (March 19, 16:00 UTC)End time is March 19, 3:00 pm PST (March 19, 22:00 UTC)

Mar 14, 1:30 AM

Dubai I Datacenter Scheduled Maintenance - zscloud.net

major

Started: Mar 14, 1:27 AM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Dubai I (DXB1) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscloud.net/cenrMaintenance Window:Start time is March 19, 9:00 am PST (March 19, 16:00 UTC)End time is March 19, 3:00 ...

Mar 14, 1:27 AM

Upcoming Data Center Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

major

Started: Mar 14, 12:04 AM

investigating

Dear Zscaler Customer,In accordance with Zscaler Service Continuity Policy and per email notification sent on March 13, 2026, we would like to notify you of the upcoming data center expansions at the locations listed below. These would be available anytime on or after May 12, 2026; 60 days or more from the date the first email notification is sent.Please update your firewall policy rules and any upstream Access Control Lists (ACLs) to allow the new IP address ranges to avoid any ser...

Mar 14, 12:04 AM

Singapore IV Datacenter Scheduled Maintenance - zscaler.net, zscloud.net

major

Started: Mar 13, 8:53 PM

investigating

Zscaler will be enabling IPv6 at our Singapore IV (SIN4) Data Center.  During the maintenance window the services through SIN4 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is March 18, 9:00 am PST (March 18, 16:00 UTC)End time is March 18, 3:00 pm PST (March 18, 22:00 UTC)

Mar 13, 8:53 PM

Manchester I Datacenter Scheduled Maintenance - zscalertwo.net

major

Started: Mar 13, 5:24 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Manchester I (MAN1) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscalertwo.net/cenrMaintenance Window:Start time is March 18, 11:00 am PST (March 18, 18:00 UTC)End time is March ...

Mar 13, 5:24 PM

Manchester I Datacenter Scheduled Maintenance - zscalertwo.net

major

Started: Mar 13, 5:22 PM

investigating

Zscaler will be enabling IPv6 at our Manchester I (MAN1) Data Center.  During the maintenance window the services through MAN1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is March 18, 11:00 am PST (March 18, 18:00 UTC)End time is March 18, 4:00 pm PST (March 18, 23:00 UTC)

Mar 13, 5:22 PM

Vienna I Datacenter Scheduled Maintenance - zscloud.net, zscalerthree.net

major

Started: Mar 13, 5:06 PM

investigating

Zscaler will be enabling IPv6 at our Vienna I (VIE1) Data Center.  During the maintenance window the services through VIE1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is March 16, 1:00 pm PST (March 16, 8:00 UTC)End time is March 16, 7:00 pm PST (March 17, 2:00 UTC)

Mar 13, 5:06 PM

Manchester I Datacenter Scheduled Maintenance - zscloud.net

major

Started: Mar 13, 4:56 PM

investigating

Zscaler will be enabling IPv6 at our Manchester I (MAN1) Data Center.  During the maintenance window the services through MAN1 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is March 17, 11:00 am PST (March 17, 18:00 UTC)End time is March 17, 4:00 pm PST (March 17, 23:00 UTC)

Mar 13, 4:56 PM

Manchester I Datacenter Scheduled Maintenance - zscloud.net

major

Started: Mar 13, 4:54 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Manchester I (MAN1) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscloud.net/cenrMaintenance Window:Start time is March 17, 11:00 am PST (March 17, 18:00 UTC)End time is March 17,...

Mar 13, 4:54 PM

Taipei II Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscalerthree.net

major

Started: Mar 13, 4:43 PM

investigating

Zscaler will be enabling IPv6 at our Taipei II (TPE2) Data Center.  During the maintenance window the services through TPE2 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is March 17, 9:00 am PST (March 17, 16:00 UTC)End time is March 17, 2:00 pm PST (March 17, 21:00 UTC)

Mar 13, 4:43 PM

Taipei II Datacenter Scheduled Maintenance - zscloud.net

major

Started: Mar 13, 4:41 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Taipei II (TPE2) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscloud.net/cenrMaintenance Window:Start time is March 17, 9:00 am PST (March 17, 16:00 UTC)End time is March 17, 2:0...

Mar 13, 4:41 PM

Commercial Salesforce Security Notification - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

major

Started: Mar 13, 4:29 PM

investigating

On March 10, 2026, Zscaler was made aware of a campaign targeted at the Salesforce Experience Center impacting a large number of Salesforce customers, including Zscaler. Following guidance from Salesforce, Zscaler completed remediation of the incident on March 11, 2026.Unauthorized access to personal data was limited to the Name and Email Address field from the Commercial Zscaler Community Portal. The scope of the incident was confined to the Zscaler Commercial Salesforce tenant and...

Mar 13, 4:29 PM

Paris IV Datacenter Scheduled Maintenance - zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 13, 4:17 PM

investigating

Zscaler will be enabling IPv6 at our Paris IV (PAR4) Data Center.  During the maintenance window the services through PAR4 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is March 16, 10:00 am PST (March 16, 17:00 UTC)End time is March 16, 3:00 pm PST (March 16, 22:00 UTC)

Mar 13, 4:17 PM

Oslo III Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 13, 12:36 PM

investigating

Zscaler has detected an issue with our Oslo III datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status cha...

Mar 13, 12:36 PM

Zscaler Client Connector-Based End User Notifications Issue - zscaler.net

major

Started: Mar 13, 11:44 AM

investigating

Zscaler has detected an issue with Zscaler Client Connector-Based End User Notifications on its zscaler.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Resolved-  Issue was related to node.Update - Fri, 13 Mar 2026 12:16:51 UTCFollowing the actions previous...

Mar 13, 11:44 AM

Urgent Maintenance on Los Angeles, Los Angeles II, Seattle, San Francisco IV, and Denver III datacenters - zscalertwo.net

major

Started: Mar 12, 11:01 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Los Angeles, Los Angeles II, Seattle, San Francisco IV, and Denver III datacenters on the zscalertwo.net cloud. This maintenance is scheduled for Thursday at 11:00 PM Pacific Time on Mar 12, 2026 (Friday, Mar 13, 2026 06:00 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenan...

Mar 12, 11:01 PM

Urgent Maintenance on Atlanta II, Atlanta III, Washington DC, Washington DC IV, Miami III, and Boston I datacenters - zscalertwo.net

major

Started: Mar 12, 10:41 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Atlanta II, Atlanta III, Washington DC, Washington DC IV, Miami III, and Boston I datacenters on the zscalertwo.net cloud. This maintenance is scheduled for Thursday at 5:00 PM Pacific Time on Mar 12, 2026 (Friday, Mar 13, 2026 12:00 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after...

Mar 12, 10:41 PM

Planned Maintenance Activity for ZPA authentication service - zpatwo.net

major

Started: Mar 12, 11:58 AM

investigating

We will be performing planned maintenance on our ZPA authentication platform infrastructure to enhance availability and resiliency.  Some customers may witness below impact during this maintenance window:Brief retries or elevated latency for new auth requests might be seen during connection re‑establishment.Transient errors during auth is possible; retry should succeed.Important Note: No action is required from customers and this communication is only intended to inform in ad...

Mar 12, 11:58 AM

Administration UI and User Authentication Issues - zscaler.net

major

Started: Mar 12, 9:12 AM

investigating

Zscaler has detected an issue with the administration UI and user authentication on its zscaler.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Root Cause: A Central Authority (CA) issue triggered a CA re-election.Latest Update - Thu, 12 Mar 2026 12:22:02 UTCFol...

Mar 12, 9:12 AM

Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.eu.zsdpc.net

major

Started: Mar 12, 3:57 AM

investigating

Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on March 12th, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes. Update - Thu, 12 Mar 2026 06:03:05 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 12, 3:57 AM

Rio de Janeiro I Datacenter Scheduled Maintenance - zscalertwo.net

major

Started: Mar 11, 7:50 PM

investigating

Zscaler will be expanding its global data center footprint and performing maintenance at our Rio de Janeiro I (RIO1) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscalertwo.net/cenrMaintenance Window:Start time is March 12, 6:00 pm PST (March 13, 1:00 UTC)End time is Marc...

Mar 11, 7:50 PM

Urgent Maintenance - zscalerone.net

major

Started: Mar 11, 4:14 PM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Thursday at 1:00 AM Pacific Time on Mar 12, 2026 (Thursday, Mar 12, 2026 8:00 AM UTC), and can take up to 3 hours to complete.During maintenance, the Zscaler Client Connector Portal will be in maintenance mode. As a result, access to policy management and reporting will not be available. Existing devices that are already enrolled will not be affecte...

Mar 11, 4:14 PM

Planned Maintenance Activity for ZPA platform service - private.zscaler.com

major

Started: Mar 11, 1:21 PM

investigating

Mar 11, 1:21 PM

Reporting and Logging Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 11, 11:09 AM

investigating

Zscaler is currently investigating reports of issues with Reporting and Logging on its zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net Cloud. Your organization's policies are being enforced. All user logs are being collected and will be available at the resolution of this incident. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP)....

Mar 11, 11:09 AM

Urgent Maintenance on Dallas I, Dallas II, New York III, New York IV datacenters - zscalerthree.net

major

Started: Mar 11, 5:35 AM

investigating

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the  Dallas I, Dallas II, New York III, New York IV datacenters on the zscalerthree.net cloud. This maintenance can take up to 2 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.Update - Wed, 11 Mar 2026 10:02:18 UTCThis a...

Mar 11, 5:35 AM

Scheduled Maintenance on AMER region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 11, 12:47 AM

investigating

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the AMER region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 6:00 PM Pacific Time on Mar 14, 2026 (Sunday, Mar 15, 2026 01:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after ...

Mar 11, 12:47 AM

Scheduled Maintenance on APAC region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 11, 12:42 AM

investigating

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the APAC region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Saturday at 6:00 AM Pacific Time on Mar 14, 2026 (Saturday, Mar 14, 2026 01:00 PM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available afte...

Mar 11, 12:42 AM

Scheduled Maintenance on EMEA region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

major

Started: Mar 11, 12:39 AM

investigating

The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the EMEA region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is scheduled for Friday at 6:00 PM Pacific Time on Mar 13, 2026 (Saturday, Mar 14, 2026 01:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after ...

Mar 11, 12:39 AM

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