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.
March 2026
ZIdentity Portal Issue - zslogin.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler is investigating an issue with the ZIdentity Portal on the zslogin.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.Root cause- The issue occurred due to a recent service update.Update - Sat, 21 Mar 2026 12:10:56 UTCThe Zscaler team has identified the root cau...
Capetown IV Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with our Capetown IV datacenter and is currently investigating the matter. 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 section in your Zscaler customer support portal (CSP). Status ...
Zscaler is actively implementing mitigation measures for an intermittent, low-impact issue affecting the Zscaler Internet Access (ZIA) Service Edge. As part of our troubleshooting and remediation process, we are making adjustments to a specific feature indicated by our data to be triggering the issue. As a result, some Cloud Browser Isolation (CBI) customers who have enabled the newly released Original URL feature in their Isolation Profile may periodically still see the full...
Rio de Janeiro I Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler will be enabling IPv6 at our Rio de Janeiro I (RIO1) Data Center. During the maintenance window the services through RIO1 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 March 23, 2:00 pm PST (March 23, 21:00 UTC)End time is March 23, 7:00 pm PST (March 24, 2:00 UTC)Update 3/23: Maintenance Postponed
Atlanta III Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscloud.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler will be enabling IPv6 at our Atlanta III (ATL3) Data Center. During the maintenance window the services through ATL3 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 March 23, 6:00 pm PST (March 24, 1:00 UTC)End time is March 23, 11:00 pm PST (March 24, 6:00 UTC)
Urgent Maintenance - zscaler.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Atlanta II, Atlanta III, Los Angeles, Los Angeles II 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.Update - Fri, 20 Mar 2026 18:06:31 UTCThis activit...
Urgent Maintenance on Dusseldorf 1 and Frankfurt 6 datacenters - zscaler.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Dusseldorf 1 and Frankfurt 6 datacenters on the zscaler.net cloud. This maintenance is scheduled for Thursday at 11:30 PM Pacific Time on March 19, 2026 (Friday, March 20, 2026 6:30 AM UTC), and can take up to 1 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 Sup...
Urgent Maintenance - AMER Region - zscalertwo.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the AMER region's datacenters of zscalertwo.net cloud. This maintenance is scheduled for Thursday at 9:00 PM Pacific Time on Mar 19, 2026 (Friday, Mar 20, 2026 4:00 AM UTC), and 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 addi...
Urgent Maintenance on New York 3 and 4 datacenters - zscaler.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the New York 3 and 4 datacenter on the zscaler.net cloud. This maintenance is scheduled for Thursday at 1:30 AM Pacific Time on March 19, 2026 (Thursday, March 19, 2026 8:30 AM UTC), and 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 ...
User Authentication Issue on Sao Paulo II - zscaler.net, zscalertwo.net, zscloud.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with its Sao Paulo II datacenter and is currently investigating the matter. 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 section in your Zscaler customer support portal (CSP). Status...
