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.
August 2026
Seoul I 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 Seoul I datacenter. 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 detailed updates, please check the Service Status...
Update to AI/ML Content Categorization for Miscellaneous and Unknown URLs - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Context-Aware Model UpgradeTo improve classification accuracy and expand categorization coverage for URLs that are not currently categorized in the Zscaler primary database, Zscaler has updated the existing AI/ML-based content categorization capability for Miscellaneous and Unknown inline URLs. This capability is available to customers who have enabled the feature in their tenant and has been used to classify eligible inline uncategorized URLs for some time. This update introduces a more cont...
Scheduled Maintenance Extended - zscalertwo.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscalertwo.net cloud by 2 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.
New Datacenter Expansion Milan IV (MIL4) - private.zscaler.com
Source not attested
Last archived state: investigating
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investigating
As part of our regular expansion of capacity, we are adding ZPA Public Service Edge nodes to our new data center in Milan IV (MIL4).If you restrict outbound firewall access, please ensure you have added the complete set of published IPs in the URL belowhttps://config.zscaler.com/private.zscaler.com/zpa
Zscaler is investigating an issue affecting the 3rd-Party App Governance (AppTotal) portal. Customers may currently experience issues accessing the 3rd-Party App Governance (AppTotal) portal. The service remains operational, but portal access may be unavailable for some users.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...
Administration UI Issue - zpatwo.net
Source not attested
Last archived state: investigating
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investigating
Zscaler is currently investigating reports of issues with the administration UI on its zpatwo.net Cloud. Customers may encounter disconnections, periods of slowness 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: The issue was caused by a temp...
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 Thursday at 6:00 PM Pacific Time on August 6, 2026 (Friday, August 7, 2026 01:00 AM UTC), and can take up to 3 hours to complete. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.
Scheduled Maintenance Extended - APAC Region - zscloud.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscloud.net cloud's APAC region by 2 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.
Zscaler is investigating an issue with its private.zscaler.com, zpaatwo.net, and zpa beta Clouds. 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: Root cause was identified as a compatibility issue introduced in a recent datapath release, which impacted connectivity...
Zscaler is performing an urgent maintenance for ZPA client-less service. Existing clientless sessions may get briefly disconnected during this maintenance activity. Update - Thu, 06 Aug 2026 18:47:53 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.
