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
Lagos II Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with its Lagos II datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to Lagos III datacenter. For more information, please refer to the following support article. 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...
Opt Out of Microsoft Azure Network Adapter (MANA) for Zscaler ZPA Private Infrastructure Deployed in Microsoft Azure - private.zscaler.com, zpatwo.net, zpabeta.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Microsoft is currently deploying the Microsoft Azure Network Adapter (MANA), a next-generation network interface included within Azure Boost, across existing Azure virtual machine (VM) size families. This deployment will replace the Mellanox ConnectX-based Accelerated Networking hardware currently utilized by ZPA App Connector, Private Service Edge, Network Connector, and Private Cloud Controller. Effective August 1, 2026, Azure may automatically transition MANA-eligible VMs to MANA-capable h...
Mumbai IV Data Center Decommissioning - zscaler.net
Source not attested
Last archived state: investigating
View archived record details
investigating
You are receiving this notice in accordance with the Zscaler Service Continuity Policy.Please note that the Mumbai IV (BOM4) data center will be shut down any time on or after October 21, 2026. The customers that are still connecting to BOM4 via GRE or IPSEC tunnel(s) must migrate their traffic to the new Mumbai VII (BOM7) data center. All such customers will be contacted separately with migration instructions. Other Zscaler sites and Zscaler Services will continue to operate normally.
Zscaler Mobile Admin (ZMA) Availability Issue - zscalertwo.net
partialSource not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an 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 secti...
Mexico City II Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
Source not attested
Last archived state: investigating
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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 Mexico City II (MEX2) data center. This facility will be added to the public resolution service (Auto Geo Proximity) on August 3, 2026What if I have more questions? Contact Zscaler Support via the “Support” link at the top-right of the Zscaler Administration U...
Administration UI and Authentication Issue - zscalertwo.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has detected an issue with its zscalertwo.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 platform issue briefly disrupted ZIA control plane services, resulting in the impact observed during this incident window. This is a preliminary observati...
Cloud-to-Cloud Incident Forwarding and Email DLP Issue - zscloud.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler is investigating an issue affecting cloud-to-cloud (C2C) incident forwarding and email DLP for some tenants. Customers may experience disruption to cloud-to-cloud incident forwarding across inline, endpoint, and other channels, where DLP incidents may not be captured in incident records during the impact window. Email DLP quarantine actions are also impacted, and quarantine release actions may be delayed or unavailable. Remediation actions may not execute as expected, and dashboards ...
Red Hat Enterprise Linux (RHEL) 9.x Boot Issue Impacting ZPA Components During Operating System (OS) Upgrades - private.zscaler.com, zpatwo.net, zpabeta.net
Source not attested
Last archived state: investigating
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investigating
As a continuation of the previous Advisory related to RHEL 9.x Boot Issue Impacting ZPA Components During OS Upgrades, we would like to provide the following information regarding the latest progress and next steps.Zscaler is aware of a boot-related issue affecting Red Hat Enterprise Linux (RHEL) 9.x that can impact ZPA infrastructure components, and to share the steps we are taking to protect your environment. A recent Red Hat update (RHBA-2026:18665, released with RHEL 9.x on May 19, 2026) ...
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 Servic...
Rare Windows System Crash During Upgrade or Uninstall of Zscaler Client Connector 4.8 Builds Prior to 4.8.0.190 - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net
Source not attested
Last archived state: investigating
View archived record details
investigating
Zscaler has identified an issue in the ZCC driver included with Windows ZCC 4.8 builds prior to 4.8.0.190. The issue may be triggered when the impacted driver is replaced or removed during a ZCC upgrade or uninstall.The condition is timing-dependent and may occur only under rare circumstances based on system activity at the time of the upgrade or uninstall. Because of this, it is not possible to predict in advance which individual endpoints may encounter the issue.Affected versions:- Zscaler ...
