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.
May 2026
London III (LON3) Datacenter Network Maintenance - zscaler.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler will be performing hardware maintenance in the London III (LON3) Datacenter.Maintenance window,Start: 2026-05-12 20:30 BSTEnd: 2026-05-12 23:30 BST(i.e. 2026-05-12 19:30 - 22:30 UTC)During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.
Atlanta II (ATL2) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler will be performing hardware maintenance in the Atlanta II (ATL2) Datacenter.Maintenance window,Start: 2026-5-12 03:00 EDTEnd: 2026-5-12 07:00 EDT(i.e. 2026-5-12 07:00 - 11:00 UTC)During this maintenance, traffic will failover to redundant devices in the same datacenter, and we expect no service impact.
ZDX Server Error Issue - zdxcloud.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with its zdxcloud.net Cloud. Customers may encounter intermittent ZDX Server Errors; additionally, the ZCC ZDX tab may not display scores or allow tests to run, and the ZDX portal may show gaps or delayed telemetry for impacted devices.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...
Urgent Scheduled Maintenance - zdxcloud.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
The Zscaler SRE team will be performing an urgent maintenance on the zdxcloud.net cloud. This maintenance is scheduled for Friday at 06:30 AM UTC on 8th May, 2026, and can take up to 30 minutes to complete. During this maintenance window the ZDX Admin Portal, including policy management, reporting access, and authentication of new users will not be available. As part of our standard maintenance process all logs will be collected and available after maintenance has completed.Update - Fri, 08 M...
New enrollments failing for App Connectors/PSEs/Network Connectors - private.zscaler.com, zpatwo.net, zpabeta.net
majorSource not attested
Last archived state: investigating
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investigating
Zscaler is currently investigating reports of issues with new enrollments on its private.zscaler.com Cloud. Customer Guidance: Customers running App Connector version 52 or earlier should avoid restarting, provisioning, or reprovisioning App Connectors at this time. If no changes are made, existing traffic and connected services remain operational. If you are experiencing an issue or have an urgent need to make changes, please contact support immediately for assistance, as alternative op...
Tel Aviv II (TLV2) Datacenter Scheduled Maintenance - zscloud.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler will be performing hardware maintenance in Tel Aviv II (TLV2) Datacenter.New Maintenance window, Start: 2026-05-11 01:00 UTC End: 2026-05-11 04:00 UTC (Local Time 2026-05-11 04:00 - 2026-05-11 07:00 Local Time)Update - Mon, 11 May 2026 03:22:55 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.
Reporting and Logging Issue - private.zscaler.com
majorSource not attested
Last archived state: investigating
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investigating
Zscaler has detected an issue with Reporting and Logging on its private.zscaler.com cloud in US1 Logging Zone. We are investigating periods of slowness, connection timeouts and/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: Intermittent b...
Intermittent Connectivity Issues with Atlassian Jira in Multiple US Regions - zscalertwo.net
majorSource not attested
Last archived state: investigating
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investigating
Zscaler is currently investigating reports of intermittent access issues with Atlassian Jira. Some customers may experience intermittent connectivity issues or timeouts when attempting to access Atlassian Jira.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- A servic...
ZDX Server Error Issue - zdxcloud.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has identified an issue affecting the zdxcloud.net cloud. Customers may encounter ZDX Server Errors; additionally, the ZCC ZDX tab may not display scores or allow tests to run, and the ZDX portal may show gaps or delayed telemetry for impacted devices.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 t...
Planned Maintenance Activity for ZPA platform service - private.zscaler.com
majorSource not attested
Last archived state: investigating
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investigating
We will be performing planned maintenance on our platform infrastructure in the Prod EMEA region to enhance availability and resiliency. Some customers may witness below impact during this maintenance window:Momentary disconnect and auto-reconnect of zcc.Any active session will be disconnected and logged under ZPA User Activity logs as “MT_CLOSED_TLS_CONN_GONE_SCIM_USER_MOVED”Important Note: No action is required from customers and this communication is only intended to in...
