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Zscaler Outage History

Daily provider-status observations and published incident history for Zscaler.

Degraded performance

Zscaler is reporting degraded performance. Verified . Official provider source.

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14.3% of 28 verified observed days had no reported provider issue

90-Day Trend

Jul 22Oct 20

Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.

Recorded Daily Status (Last 62 Days)

Jul 22 Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data

Incident History

October 2026
Experience Center Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net
minor

View incident details and source

Notice published:

Provider resolved: . The notice publication date does not establish the outage start.

resolved
Following the actions 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.
Administration UI Issue - zscloud.net
minor

View incident details and source

Notice published:

monitoring
Zscaler has implemented preliminary mitigation measures to address the issue. The team is actively monitoring and evaluating the effectiveness of these measures.
Audit Logs Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
minor

View incident details and source

Notice published:

Provider resolved: . The notice publication date does not establish the outage start.

resolved
Zscaler has resolved the issue affecting audit log visibility in the admin portal. The underlying cause has been addressed and audit logs are now visible and accessible across all affected clouds.
Zscaler Admin Console issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, zslogin.net
major

View incident details and source

Notice published:

Provider resolved: . The notice publication date does not establish the outage start.

resolved
Zscaler has resolved the issue preventing a subset of administrators from logging into the Zscaler Admin Console. The issue was caused by a routing defect introduced in a recent build upgrade that caused IDP-based authentication requests to be misrouted to an incorrect region, resulting in a tenant lookup failure and 401 unauthorized error. The build has been successfully rolled back to the previous stable version, and admin console login has been confirmed restored.
Mexico City II Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
minor

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Notice published:

Provider resolved: . The notice publication date does not establish the outage start.

resolved
Zscaler can confirm that the issue has been resolved without any intervention. Preliminary findings indicate that the issue was observed within the network provider’s infrastructure, and our monitoring has confirmed that the network is stable.
Risk360 Data Update and Risk Score Accuracy Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zscalerrisk.net
minor

View incident details and source

Notice published:

Provider resolved: . The notice publication date does not establish the outage start.

resolved
Zscaler has resolved the issue causing interrupted ZPA-related data updates in Risk360. Affected connectors have been successfully reactivated and data updates have resumed across impacted accounts. A code-level fix addressing the underlying cause has been deployed to production. Risk360 data and risk scores are confirmed accurate and the issue is resolved.
Network Connectivity Degradation — Mexico City I and Mexico City II Data Centers - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
minor

View incident details and source

Notice published:

Provider resolved: . The notice publication date does not establish the outage start.

resolved
Following the routing adjustments applied by Zscaler, service has been restored at the Mexico City I and Mexico City II data centers, and monitoring has confirmed continued stability. The incident is resolved. The routing adjustments remain in place while the third-party provider completes permanent repairs to the affected connectivity.
Cloud NSS Issue - zscaler.net, zscloud.net
major

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Notice published:

Provider resolved: . The notice publication date does not establish the outage start.

resolved
Zscaler has resolved an issue where a subset of customers across ZSNet and ZSCloud may have experienced disruption in Cloud NSS firewall log delivery to their configured SIEMs. The issue has been fully resolved and services are confirmed stable.
Reporting and Logging Issue - zscalertwo.net
minor

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Notice published:

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.
ZCC Flow Logging Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
minor

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Notice published:

investigating
A fix has been verified and is planned for release in an upcoming production update, with more details to be shared as they become available.

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.

July 2026
Zscaler Help Portal - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com
minor Source not attested
Last archived state: resolved
View archived record details
resolved
Zscaler has identified an issue affecting the Zscaler Help Portal. The root cause has been traced to an ongoing Amazon CloudFront incident. We will provide a further update as soon as more information becomes available or once the issue has been resolved.
Intermittent Login Issues with Experience Center - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, zscalerrisk.net, zslogin.net
partial Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler experienced intermittent login issues affecting the Experience Center. The issue has been mitigated, and we are continuing to monitor the service to ensure stability. During the incident window, some customers may have experienced intermittent difficulties logging in.Root Cause: A deployment-related configuration change caused intermittent login issues affecting the Experience Center.Update - Wed, 15 Jul 2026 22:22:42 UTCFollowing the actions previously taken by Zscaler, the incident ...
Reporting and Logging Issue - zscloud.net, zscalerthree.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler is currently investigating reports of issues with Reporting and Logging on its zscloud.net, zscalerthree.net Cloud. Your organization's policies are being enforced. All user logs are being collected and will be available at the resolution of this incident. 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 po...
Administration UI Issue - zscalerthree.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with the administration UI on its zscalerthree.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: Issue occurred due to recent service update.Latest Update - Wed, 15 Jul 2026 09:39:58 UTCFollowing the actions previously taken b...
Intermittent loss of connectivity on macOS Tahoe and Sequoia with route-based traffic interception - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net
partial Source not attested
Last archived state: investigating
View archived record details
investigating
What is the issue?:The native macOS firewall on Tahoe and Sequoia can significantly delay processing and intermittently drop Zscaler Client Connector traffic after device boot-up and wake/sleep events, resulting in Zscaler Client Connector not being able to receive traffic from apps and consequently forwards traffic to the Zero Trust Exchange in route-based traffic interception mode. During this event, users receive a “Endpoint FW/AV Error” error in Zscaler Client Connector and lose conn...
ZPA Diagnostic logs Issue - private.zscaler.com
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with its private.zscaler.com 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: Issue occurred due to recent service update.Update - Tue, 14 Jul 2026 08:25:06 UTCZscaler has identified the root cause and implemented mitigation measu...
Degraded AgentZ Performance and Conversation History - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
Source not attested
Last archived state: investigating
View archived record details
investigating
We are currently investigating a potential issue were customers are experiencing 503 Service Temporarily Unavailable errors when submitting support cases via AgentZ.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 an internal configuration and...
ZDX Copilot Experiencing Degraded Performance for Entity-Based Questions - zdxcloud.net
partial Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with its zdxcloud.net Cloud. Customers using ZDX Copilot may experience degraded performance when submitting queries involving users, devices, applications, and other entity-based data. This may result in slower responses, incomplete results, or difficulty retrieving expected insights through Copilot.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer supp...
Website inaccessibility issue over PAC - zscaler.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler is investigating an issue with 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.Root Cause: Preliminary investigation suggests that the root cause is attributed to a recent change.Update - Sat, 11 Jul 2026 09:48:57 UTCZscaler has identified and re...
Zscaler Client Connector (ZCC) Device Registration Failures - zscalertwo.net, zscalerthree.net
major Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler is aware of and investigating an issue affecting a subset of users on the zscalertwo.net and zscalerthree.net clouds who may experience device registration failures in Zscaler Client Connector (ZCC). Affected users may see a “Device Registration Failed” message with error code 3053 and may be unable to complete device registration or access services.At this time, this issue does not affect all users or all customers. Based on current findings, the impact appears to be limited to u...