Microsoft: Windows 365 update blocks access to Cloud PC sessions
ID: e139c30e-ba80-5eff-9dfd-25adb8e31dfe
STIX ID: report--e139c30e-ba80-5eff-9dfd-25adb8e31dfe
Feed Name: Bleeping Computer
Microsoft confirmed that a recent Windows 365 update caused sign-in failures and connection issues for Windows 365 Cloud PC sessions beginning Tuesday at 19:00 UTC, detected via increased failed connection attempts and tracked as WP1217671. Engineers are investigating and advise temporary workarounds using the Windows App Web Client (windows.cloud.microsoft) or the Remote Desktop client. Separately, Microsoft acknowledged a known issue tied to the January 2026 KB5074109 security update that triggers Remote Desktop authentication errors for Azure Virtual Desktop and Windows 365 on Windows 11 25H2/24H2 and Windows Server 2025/2022/2019, with the incident flagged as service degradation.
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