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.
Zscaler is aware of an issue affecting the National Vulnerability Database (NVD) Connector, resulting in failures during incremental synchronization of vulnerability data. Zscaler investigation has determined that the issue is caused by a service degradation affecting the National Vulnerability Database (NVD) REST API, which the connector relies upon to retrieve vulnerability information.Customer ImpactCustomers using the NVD Connector may experience:Failed incremental synchronization attempt...
ZTW Control Gateway Connection Degradation - zscaler.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected and is investigating a service degradation affecting ZTW Control Gateway connectivity within the zscaler.net cloud. Customers using Zero Trust SD-WAN Devices (ZTW) devices, Cloud Connectors, and Branch Connectors may experience issues establishing new connections or reconnecting to the service. Previously established connections may continue to operate; however, connectivity behavior may vary depending on existing session and cache states.Zscaler teams are actively inve...
Upcoming Data Center Expansion in Zpa - private.zscaler.com
Source not attested
Last archived state: investigating
View archived record details
investigating
As part of our regular expansion of capacity, we are adding additional ZPA Public Service Edge nodes to our existing data center in Seattle (SEA1) for Zpa cloud.These would be available anytime on or after June 25, 2026.RegionLocationNotesAMERICASSEATTLE Expansion of Existing DCThe IP addresses for the DC are part of the already published IP address range.Please update your firewall policy rules along with any upstream ACL(s) to allow the IP address ranges to avoid any service disruption.For...
ZDX Admin Portal – Reporting and Logging Delay - zdxcloud.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
Zscaler has detected an issue with Reporting and Logging on its zdxcloud.net Cloud. Customers may experience gaps in ZDX telemetry data.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.Latest Update - Tue, 23 Jun 2026 23:56:01 UTCZscaler has restored the affected service and co...
New Policy Issue - zscaler.net
partialSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler is actively investigating a potential intermittent connectivity and performance issue affecting zscaler.net Cloud that may be impacting some customers. Our teams are currently assessing the scope and cause. We will provide an update as soon as more information becomes available.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 addition...
Scheduled Maintenance Extended - AMER Region - zscaler.net
minorSource not attested
Last archived state: resolved
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resolved
The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the AMER region's datacenters on zscaler.net cloud by 3 hours. During this extended maintenance window the ZIA Admin Portal, including policy management and reporting access, and new user authentication should be successful. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed.
Urgent Maintenance on Hyderabad I, Kolkata I, Mumbai VI, Mumbai VII, New Delhi I datacenters - 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 Hyderabad I, Kolkata I, Mumbai VI, Mumbai VII, New Delhi I datacenters on the zscalerthree.net cloud. 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.
Intermittent Traffic Related Issues - zscaler.net
partialSource not attested
Last archived state: investigating
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investigating
Zscaler has identified an intermittent issue affecting a small subset of service edges in the zscaler.net cloud and is actively investigating the matter. Customers may experience intermittent slowness, connection timeouts, 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 b...
Scheduled Maintenance Extended - AMER Region - zscloud.net
minorSource not attested
Last archived state: resolved
View archived record details
resolved
The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance for AMER Region by two hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.
Cybersecurity Insight Report, Company Risk Score, and Patient Zero security alerts issue - zscaler.net, zscloud.net, zscalerthree.net
Source not attested
Last archived state: investigating
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investigating
Zscaler has detected an issue with the Cybersecurity Insight Report, Company Risk Score, and Patient Zero security alerts on the zscaler.net, zscloud.net, and zscalerthree.net Clouds.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 recent fix introduced an unintend...
