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.
June 2026
Urgent Maintenance on San Francisco IV datacenter - zscloud.net, zscalerthree.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the San Francisco IV datacenter on the zscloud.net and zscalerthree.net clouds. This maintenance can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.
Data Fabric - Delay in Data Delivery - zscaler.net, zscalerone.net, zscloud.net, zscalerthree.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has identified an issue affecting Data Fabric. Web Log and Firewall transaction data delivery to Breach Predictor and Red Canary is delayed. Other logging and data collection services remain operational.Zscaler teams are actively working to restore normal data processing and will provide updates as progress is made. 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 ...
New Delhi I and Mumbai VI Data center Issue - zscaler.net, zscalerthree.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with our New Delhi I (ZSN) and Mumbai VI (ZS3) data centers and is currently investigating the matter. Customers may encounter disconnections, periods of slowness 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 deta...
The Zscaler Site Reliability Engineering team will be performing an urgent maintenance during which access to the Partner Admin UI will not be available. This maintenance can take up to 30 minutes to complete. All the logs that are collected during this period will be available after the maintenance ends.Update - Fri, 05 Jun 2026 08:47:48 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.
Urgent Maintenance on San Francisco IV datacenter - zscaler.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the San Francisco IV datacenter on the zscaler.net cloud. This maintenance can take up to 2 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.
Zscaler will be performing urgent hardware maintenance in the Lagos III (LOS3) Datacenter.Maintenance window,Start: 2026-06-05 04:00 WATEnd: 2026-06-05 08:00 WAT(i.e. 2026-06-05 03:00 - 07:00 UTC)During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact. Update - Fri, 05 Jun 2026 04:08:22 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.
CASB - SaaS Security API Integration Issue for OpenAI (ChatGPT) - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
partialSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has identified and is investigating an issue affecting CASB SaaS Security scanning for OpenAI (ChatGPT). Customers may experience delays in security scan results and related incident reporting for OpenAI content. Zscaler teams are actively investigating the issue and working to restore services. We will provide additional updates as more information becomes available. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status c...
Urgent Maintenance on Boston I datacenter - zscalertwo.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Boston I datacenter on the zscalertwo.net cloud. This maintenance can take up to 2 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.
Zscaler will be enabling IPv6 at our Frankfurt VI (FRA6) Data Center. During the maintenance window the services through FRA6 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 June 4, 11:00 am PDT (June 4, 18:00 UTC)End time is June 4, 4:00 pm PDT (June 4, 23:00 UTC)Update - Thu, 04 Jun 2026 23:26:26 UTCThis activity has been completed. Please contact Zscaler Supp...
Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.zsdpc.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on June 3rd, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes. Update - Wed, 03 Jun 2026 05:50:24 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.
