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.
August 2026
Seoul I Datacenter Issue - zscalerthree.net
Source not attested
Last archived state: investigating
View archived record details
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
View archived record details
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
View archived record details
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.
