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.
July 2026
Data at Rest Scanning Issue - zscloud.net
Source not attested
Last archived state: investigating
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investigating
Zscaler has detected an issue with its zscloud.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 - Sun, 19 Jul 2026 07:30:04 UTCZscaler has made the necessary changes and implemented the required meas...
Urgent maintenance on ZS1 VZEN nodes - zscalerone.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
Zscaler will be performing an urgent maintenance on the VZEN nodes in zscalerone.net cloud. The maintenance will happen across VZEN nodes during the window, beginning at 02:00 PM Pacific Time on Saturday, July 18, 2026 and continuing for up to 6 hours. VZEN's services may 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 after maintenance is complete.
Required Action: Opt Out of Microsoft Azure Network Adapter (MANA) for Zscaler Cloud Connectors Deployed in Microsoft Azure - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net
Source not attested
Last archived state: investigating
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investigating
Microsoft is currently deploying the Microsoft Azure Network Adapter (MANA), a next-generation network interface included within Azure Boost, across existing Azure virtual machine (VM) size families. This deployment will replace the Mellanox ConnectX-based Accelerated Networking hardware currently utilized by Cloud Connector. Effective August 1, 2026, Azure may automatically transition MANA-eligible VMs to MANA-capable hardware during routine lifecycle events, unless an explicit opt-out is ...
New York IV (NYC4) Datacenter Network Maintenance - zscalertwo.net, zscloud.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
Zscaler will be performing hardware maintenance in the New York IV (NYC4) Datacenter.Maintenance window,Start: 2026-07-21 18:00 EDTEnd: 2026-07-21 21:00 EDT(i.e. 2026-07-21 22:00 - 2026-07-22 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.Update - Tue, 21 Jul 2026 23:37:07 UTCThis activity has been completed. Please contact Zscaler Support if you have addition...
Scheduled Maintenance Extended - zscalerone.net
minorSource not attested
Last archived state: resolved
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resolved
The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscalerone.net cloud by 5 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.
Administration UI Issue - zscaler.net
Source not attested
Last archived state: investigating
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investigating
Zscaler has identified an issue affecting the Administration UI and Zscaler Client Connector Admin Portal on the zscaler.net cloud. Customers may experience issues accessing the Administration UI and the Zscaler Client Connector 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). Status changes and additional details will be posted there as they becom...
New Delhi Datacenter issue - zscalerthree.net
Source not attested
Last archived state: investigating
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investigating
Zscaler is currently investigating reports of an issue with its New Delhi I 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 wi...
Reminder Notification for Upcoming New DCs and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net
Source not attested
Last archived state: investigating
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investigating
Dear Customer, In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on June 1, 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 July 31, 2026.Please update your firewall policy rules and any upstream access lists to allow the new IP address ranges to avoid any service disruption.RegionLocationCIDRNotesAmericasBuenos Aires II...
Reminder Notification for Additions to HUB IP Address Ranges - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zdxcloud.net
Source not attested
Last archived state: investigating
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investigating
Dear Customer, In accordance with Zscaler Service Continuity Policy and as previously announced via Trust and email notification sent on June 1, 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 July 31, 2026.CIDRNotes175.107.184.0/23New addition to Required Hub IP addressesPlease update your firewall policy rules and any upstream access control lists to...
Washington DC (WAS1) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscalerthree.net
minorSource not attested
Last archived state: resolved
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resolved
Zscaler will be performing hardware maintenance in Washington DC (WAS1) Datacenter.Scheduled Maintenance window, Start: 2026-07-17 02:00 UTC End: 2026-07-17 06:00 UTC (Local Time 2026-07-16 22:00 - 2026-07-17 02:00)Update: The maintenance window has been extended by an additional 2 hours.Update - Fri, 17 Jul 2026 05:12:26 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.
