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.
Root Cause: Preliminary root cause is attributed to an internal backend infrastructure issue, which has since been fully resolved.
Following the actions previously taken by Zscaler, the incident has been resolved.
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.
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.
Provider resolved: . The notice publication date does not establish the outage start.
resolved
Services have recovered following remediation of a network configuration issue by our infrastructure partner. We are continuing to monitor the environment to ensure stability.
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.
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.
Tokyo IV and Tokyo V Data Center Issue - zscalerthree.net
Provider resolved: . The notice publication date does not establish the outage start.
resolved
The performance issue has been resolved. The degradation was observed between 0800–1000 Japan time following resumption of business activity post a holiday period, and recovered without any intervention. The environment is confirmed stable.
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.
Zscaler has identified an issue impacting Zoom Call Quality Monitoring (CQM) within ZDX, where Zoom webhook data is not currently being received as expected. As a result, Zoom call quality metrics may appear delayed, stale, or unavailable in the ZDX portal. Zscaler is actively investigating the issue and working to restore normal data processing.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscal...
Zscaler will be enabling IPv6 at our Warsaw II (WAW2) Data Center. During the maintenance window the services through WAW2 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 28, 9:00 am PDT (May 28, 16:00 UTC)End time is May 28, 3:00 pm PDT (May 28, 22:00 UTC)Update - Thu, 28 May 2026 22:15:30 UTCThis activity has been completed. Please contact Zscaler Support ...
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...
Scheduled Maintenance Extended - 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 (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.
Scheduled Maintenance Extended - EMEA Region - 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 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
Scheduled Maintenance Extended - EMEA Region - zscalerthree.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 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
Packet Capture Probing Issue - zdxcloud.net
Source not attested
Last archived state: investigating
View archived record details
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...
ZDX Server Error Issue - zdxcloud.net
Source not attested
Last archived state: investigating
View archived record details
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...
Scheduled Maintenance Extended - CHI - zscalerthree.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 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.
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.
