Following the security update on 2026-01-13, the Windows App is facing authentication failures, affecting Remote Desktop connections and access to Azure Virtual Desktop and Windows 365. The problem impacts supported versions from Windows 10 Enterprise LTSC 2016 through Windows 11 25H2, and Windows Server versions from 2019 to 2025. Microsoft is actively addressing the situation.
User Access and Solutions
The reported issue causes 'Unable to Authenticate' errors, disrupting professional workflows. Users experiencing these problems are recommended to uninstall the recent update to regain access, though this step will leave devices without the latest security fixes. Alternatively, Microsoft suggests using the Remote Desktop Client or accessing services via the Windows App web client as interim solutions.
Mitigation and Future Plans
Microsoft has acknowledged the problem and is investigating the root cause. They have offered a Known Issue Rollback for immediate mitigation, although this has not yet appeared on the Release Health dashboard. An out-of-band update is expected in the coming days to permanently resolve the issue. This development signals significant headwinds for IT professionals relying on seamless connectivity.
