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.
March 2026
Urgent Maintenance on Los Angeles, Los Angeles II, Seattle, San Francisco IV, and Denver III datacenters - 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 Los Angeles, Los Angeles II, Seattle, San Francisco IV, and Denver III datacenters on the zscalertwo.net cloud. This maintenance is scheduled for Thursday at 11:00 PM Pacific Time on Mar 12, 2026 (Friday, Mar 13, 2026 06:00 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 maintenan...
Urgent Maintenance on Atlanta II, Atlanta III, Washington DC, Washington DC IV, Miami III, and Boston I datacenters - 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 Atlanta II, Atlanta III, Washington DC, Washington DC IV, Miami III, and Boston I datacenters on the zscalertwo.net cloud. This maintenance is scheduled for Thursday at 5:00 PM Pacific Time on Mar 12, 2026 (Friday, Mar 13, 2026 12:00 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...
Planned Maintenance Activity for ZPA authentication service - zpatwo.net
majorSource not attested
Last archived state: investigating
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investigating
We will be performing planned maintenance on our ZPA authentication platform infrastructure to enhance availability and resiliency. Some customers may witness below impact during this maintenance window:Brief retries or elevated latency for new auth requests might be seen during connection re‑establishment.Transient errors during auth is possible; retry should succeed.Important Note: No action is required from customers and this communication is only intended to inform in ad...
Administration UI and User Authentication Issues - zscaler.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with the administration UI and user authentication on 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: A Central Authority (CA) issue triggered a CA re-election.Latest Update - Thu, 12 Mar 2026 12:22:02 UTCFol...
Release Upgrade for Zscaler Data Security Posture Management (DSPM) - app.eu.zsdpc.net
majorSource not attested
Last archived state: investigating
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investigating
Zscaler Data Posture Control (DSPM) Operations team will be performing a planned upgrade activity on March 12th, 2026. These service updates are applied in regional off-peak hours and should not result in any downtime for customers. Please reach out to Customer support for more information about the changes. Update - Thu, 12 Mar 2026 06:03:05 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.
Rio de Janeiro I Datacenter Scheduled Maintenance - zscalertwo.net
majorSource not attested
Last archived state: investigating
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investigating
Zscaler will be expanding its global data center footprint and performing maintenance at our Rio de Janeiro I (RIO1) data center. We expect minimal to no impact to services during the maintenance window. Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DCFor more information, please visit:https://config.zscaler.com/zscalertwo.net/cenrMaintenance Window:Start time is March 12, 6:00 pm PST (March 13, 1:00 UTC)End time is Marc...
Urgent Maintenance - zscalerone.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 zscalerone.net cloud. This maintenance is scheduled for Thursday at 1:00 AM Pacific Time on Mar 12, 2026 (Thursday, Mar 12, 2026 8:00 AM UTC), and can take up to 3 hours to complete.During maintenance, the Zscaler Client Connector Portal will be in maintenance mode. As a result, access to policy management and reporting will not be available. Existing devices that are already enrolled will not be affecte...
Planned Maintenance Activity for ZPA platform service - private.zscaler.com
majorSource not attested
Last archived state: investigating
View archived record details
investigating
We will be performing planned maintenance on our platform infrastructure in the Prod US 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 info...
Reporting and Logging Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler is currently investigating reports of issues with Reporting and Logging on its zscaler.net, zscalerone.net, zscalertwo.net, 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)....
Urgent Maintenance on Dallas I, Dallas II, New York III, New York IV datacenters - zscalerthree.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 Dallas I, Dallas II, New York III, New York IV datacenters on the zscalerthree.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 - Wed, 11 Mar 2026 10:02:18 UTCThis a...
