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Outage in Zscaler

Administration UI and User Authentication Issues

Resolved Minor
September 10, 2026 - Started 1 day ago - Lasted about 7 hours

Incident Report

Summary AI Generated

Zscaler's ZSNet cloud experienced intermittent disruptions to device registration, user authentication, and Admin UI access affecting a subset of customers for approximately 7 hours on September 10, 2026. Multiple mitigation attempts were unsuccessful before a final remediation action was completed, with the environment placed under monitoring to confirm full stability.

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.Latest Update - Thu, 10 Sep 2026 10:23:02 UTCZscaler has completed the remediation action and the environment is currently being monitored. It may take some time before full stability is confirmed.Update - Thu, 10 Sep 2026 06:24:10 UTCWe are aware of an issue affecting a subset of customers on the ZSNet cloud. Some customers may be experiencing intermittent disruptions to device registration, authentication, and Admin UI access. Zscaler has identified the issue and is actively working towards full restoration of services.Update - Thu, 10 Sep 2026 07:11:07 UTCZscaler continues to investigate an ongoing issue affecting a subset of customers on the ZSNet cloud experiencing intermittent disruptions to device registration, authentication, and Admin UI access. A mitigation was applied, however it did not have the desired effect. We are now focused on isolating the root cause and further updates will be shared shortly.Update - Thu, 10 Sep 2026 08:11:19 UTCZscaler continues to troubleshoot the issue and isolate the root cause. A mitigation was applied; however, it did not have the desired effect, and our teams are actively testing an additional mitigation to stabilize the service. Further updates will be shared as progress is made.Update - Thu, 10 Sep 2026 09:23:12 UTCZscaler continues to investigate the ongoing issue. Previous mitigations applied did not achieve the desired stability. Zscaler is actively pursuing a new remediation path, which is currently being validated prior to execution. Parallel investigation continues to identify and confirm the root cause. We understand the continued impact this is causing and our teams remain fully engaged in working towards full service restoration. Further updates will be shared as the situation progresses.Update - Thu, 10 Sep 2026 10:23:02 UTCZscaler has completed the remediation action and the environment is currently being monitored. It may take some time before full stability is confirmed.

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