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
Planned Maintenance Activity for ZPA authentication service - private.zscaler.com
majorSource not attested
Last archived state: investigating
View archived record details
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 advance.Plea...
Sydney V Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Dear Zscaler Customer,You are receiving this notice in accordance with the Zscaler Service Continuity Policy.As part of our effort to enhance our Security Cloud’s robustness and performance, Zscaler will be bringing online a new Sydney V (SYD5) data center. This facility will be added to the public resolution service (Auto Geo Proximity) on March 19, 2026What if I have more questions? Contact Zscaler Support via the “Support” link at the top-right of the Zscaler...
Zscaler is aware and investigating reports on an issue with ZCC Network errors on its zscalerone.net Cloud. Affected users may experience 'network connection failed' errors when attempting to log into Zscaler Client Connector (ZCC). Users who are already logged in can 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 a...
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...
San Francisco IV (SJC4) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler will be performing hardware maintenance in San Francisco IV (SJC4) Datacenter.Maintenance window: Start: 2026-03-19 06:00 UTC End: 2026-03-19 14:00 UTC (Local Time 2026-03-18 23:00 - 2026-03-19 07:00)Update - Thu, 19 Mar 2026 11:59:25 UTCThis activity has been completed. Please contact Zscaler Support if you have additional questions.
SaaS Application Activity Data Not Displaying in Activity Logs - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
majorSource not attested
Last archived state: investigating
View archived record details
investigating
Activity Logs are currently not displaying SaaS application activity data. Zscaler is actively working to resolve this issue.Who is impacted?ZIA customers who have onboarded and configured Data-at-Rest scanning for SaaS applications may temporarily be unable to view SaaS-related activity data in Activity Logs.When will this be resolved?A fix is currently being deployed and is expected to be completed across all Zscaler clouds by March 22, 2026.What are my next steps?No action is required from...
What is changing?Zscaler is deprecating individual administrative User Interfaces (UIs). Customers must migrate to ZIdentity and Experience Center, Zscaler’s centralized administrative and insights platform, to take advantage of new features and innovations.Who is impacted?All customers not currently using ZIdentity for administrative purposes must complete the migration to have access to new features and innovations.Key InformationAccess Experience Center: To use the latest administrative ...
Zscaler is investigating an issue with the Zscaler Microegmentation's log forwarding service via Log Streaming Service (LSS) on its private.zscaler.com cloud. The logs forwarding via LSS is temporarily disabled. This does not impact the core Microsegmentation functionality and all the logs will continue to be visible in the Administration UI.We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler c...
Site review is used by customers and their users to submit URL categorization and review requests to Zscaler. To provide a more secure environment for our ZIA customers, Zscaler is refining how the Site review portal authorizes URL recategorization and review requests. Previously, the portal accepted requests if either the Source IP or the X Forwarded For header belonged to a Zscaler IP address range. As part of a security enhancement, we are removing reliance on the X Forwarde...
Zscaler has detected an issue with Zscaler Client Connector Portal Issue 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- The issue was caused by a software defect introduced during a recent system update.Latest Update - Mon, 16 Mar 202...
