Provider resolved: . The notice publication date does not establish the outage start.
resolved
Following the actions taken by Zscaler, the incident has been resolved. Our systems remain fully operational, and we will continue to monitor the situation closely to ensure ongoing stability.
Zscaler has implemented preliminary mitigation measures to address the issue. The team is actively monitoring and evaluating the effectiveness of these measures.
Provider resolved: . The notice publication date does not establish the outage start.
resolved
Zscaler has resolved the issue affecting audit log visibility in the admin portal. The underlying cause has been addressed and audit logs are now visible and accessible across all affected clouds.
Provider resolved: . The notice publication date does not establish the outage start.
resolved
Zscaler has resolved the issue preventing a subset of administrators from logging into the Zscaler Admin Console. The issue was caused by a routing defect introduced in a recent build upgrade that caused IDP-based authentication requests to be misrouted to an incorrect region, resulting in a tenant lookup failure and 401 unauthorized error. The build has been successfully rolled back to the previous stable version, and admin console login has been confirmed restored.
Mexico City II Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
Provider resolved: . The notice publication date does not establish the outage start.
resolved
Zscaler can confirm that the issue has been resolved without any intervention. Preliminary findings indicate that the issue was observed within the network provider’s infrastructure, and our monitoring has confirmed that the network is stable.
Risk360 Data Update and Risk Score Accuracy Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zscalerrisk.net
Provider resolved: . The notice publication date does not establish the outage start.
resolved
Zscaler has resolved the issue causing interrupted ZPA-related data updates in Risk360. Affected connectors have been successfully reactivated and data updates have resumed across impacted accounts. A code-level fix addressing the underlying cause has been deployed to production. Risk360 data and risk scores are confirmed accurate and the issue is resolved.
Network Connectivity Degradation — Mexico City I and Mexico City II Data Centers - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
Provider resolved: . The notice publication date does not establish the outage start.
resolved
Following the routing adjustments applied by Zscaler, service has been restored at the Mexico City I and Mexico City II data centers, and monitoring has confirmed continued stability. The incident is resolved. The routing adjustments remain in place while the third-party provider completes permanent repairs to the affected connectivity.
Provider resolved: . The notice publication date does not establish the outage start.
resolved
Zscaler has resolved an issue where a subset of customers across ZSNet and ZSCloud may have experienced disruption in Cloud NSS firewall log delivery to their configured SIEMs. The issue has been fully resolved and services are confirmed stable.
Provider resolved: . The notice publication date does not establish the outage start.
resolved
Following the actions previously taken by Zscaler, the incident has been resolved. Our systems remain fully operational, and we will continue to monitor the situation closely to ensure ongoing stability.
A fix has been verified and is planned for release in an upcoming production update, with more details to be shared as they become available.
Legacy Incident Archive
453 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.
March 2026
Oslo III Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
majorSource not attested
Last archived state: investigating
View archived record details
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...
Urgent Oslo III (OSL3) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com
majorSource not attested
Last archived state: investigating
View archived record details
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.
Mumbai VI (BOM6) Datacenter Network Maintenance - zscaler.net
majorSource not attested
Last archived state: investigating
View archived record details
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)
Los Angeles I Datacenter Scheduled Maintenance - zscalertwo.net
majorSource not attested
Last archived state: investigating
View archived record details
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.
Reminder Notification for Upcoming Data Center Expansion - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net
majorSource not attested
Last archived state: investigating
View archived record details
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...
Reminder Notification for Additions of HUB IP Address Ranges - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zdxcloud.net
majorSource not attested
Last archived state: investigating
View archived record details
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...
Abu Dhabi I and Dubai II Data Center Issue - zscloud.net
majorSource not attested
Last archived state: investigating
View archived record details
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...
Dubai I Data Center Issue - zscloud.net
majorSource not attested
Last archived state: investigating
View archived record details
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...
Canberra I Data Center Issue - zscalerthree.net
majorSource not attested
Last archived state: investigating
View archived record details
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 ...
San Francisco IV (SJC4) Datacenter Network Maintenance - zscalertwo.net, zscalerthree.net
majorSource not attested
Last archived state: investigating
View archived record details
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.
