Provider resolved: . The notice publication date does not establish the outage start.
resolved
Zscaler teams have successfully deployed the fix during the planned maintenance window. Post-deployment sanity validation has been completed with successful results, and the service remains stable.
Increased CAPTCHA Challenges During Web Access - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
Provider resolved: . The notice publication date does not establish the outage start.
resolved
The increased Google CAPTCHA activity has subsided, and this incident is resolved. The investigation linked the repeated challenges to Google’s automated traffic detection. No contributing changes to Zscaler services were identified. A subset of users experienced repeated CAPTCHA prompts when accessing Google services or websites using Google CAPTCHA, interrupting searches and related workflows. Customers who continue to encounter Google CAPTCHA prompts should review Avoiding Google CAPTCHA...
Miami III, Miami IV Datacenter Issue - zscalertwo.net, zscalerthree.net
Provider resolved: . The notice publication date does not establish the outage start.
resolved
Zscaler has isolated the connectivity degradation affecting Miami III and Miami IV to congestion on external ISP network paths. Corrective action is required from the relevant service provider. This incident notification is now closed. Customers experiencing continued impact should contact their ISP to request path optimization. Connecting through an alternate data center may help mitigate the impact; please validate connectivity after failover. Contact Zscaler Support if further assistance i...
Intermittent Connectivity Issues Affecting Plain UDP Tunnels for Branch Connectors and Cloud Connectors in APAC - zscloud.net
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
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
Zscaler has completed post-deployment monitoring and confirmed that all affected services are functioning as expected. Based on continued stability and healthy service checks, we are marking this incident as 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.
update
We are receiving positive feedback from multiple customers indicating service recovery. Our teams continue to closely monitor services and will provide further updates as more information becomes available.
update
We have reverted the contributing configuration change and implemented additional adjustments to improve service capacity on ZS2. We are currently validating these changes and monitoring recovery for Zscaler Client Connector sign-in/registration and Mobile Admin Portal access. We will provide another update as validation completes or if service status changes.
update
We are continuing to investigate an issue impacting Zscaler Client Connector sign-in/registration and access to the Mobile Admin Portal for a subset of users on ZS2. Initial mitigation actions did not fully restore service. We identified a contributing configuration change that reduced service capacity for the Mobile Admin Portal on ZS2, which led to intermittent access issues for some users. Our teams are reverting the change and actively applying additional remediation steps to recover affected services. We are monitoring recovery and will provide further updates as more information becomes available.
update
We are investigating an issue impacting Zscaler Client Connector sign-in/registration and access to the Mobile Admin Portal for a subset of users on ZS2. Mitigation actions have been applied and we are now monitoring the service. We will provide another update as more information becomes available.
update
We have identified the root cause of the issue and working on resolution.
update
Zscaler has detected an Authentication issue with the Zscaler Client Connector Portal and Zscaler Client Connector (ZCC) on its zscalertwo.net Cloud. Some users may see a “Zscaler Client Connector was unable to enroll at this time” message when trying to sign in to Zscaler Client Connector (ZCC). Users who are already signed in should continue to access services normally.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.
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
minorSource not attested
Last archived state: resolved
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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
partialSource not attested
Last archived state: investigating
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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
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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
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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
partialSource 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
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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
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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
partialSource not attested
Last archived state: investigating
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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 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...
