Authentication Issue on Zscaler Client Connector for Android

Zscaler is investigating reports of an authentication issue affecting a subset of Android users who authenticate using Microsoft Entra ID. Impacted users may encounter an error stating “SSL Error occurred. The server certificate is not trusted” when attempting to sign in to the Zscaler Client Connector.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 - Fri, 30 Jan 2026 01:53:07 UTCZscaler is actively investigating this issue and has prioritized efforts to isolate the cause. Based on initial analysis, the behavior appears to be related to a recent intermediate certificate change associated with Microsoft authentication services. We appreciate your patience as we continue our investigation and work toward a resolution. Additional updates will be shared as more information becomes available.Update - Fri, 30 Jan 2026 01:53:07 UTCZscaler is actively investigating this issue and has prioritized efforts to isolate the cause. Based on initial analysis, the behavior appears to be related to a recent intermediate certificate change associated with Microsoft authentication services. We appreciate your patience as we continue our investigation and work toward a resolution. Additional updates will be shared as more information becomes available.