Microsoft’s first Windows 11 update of 2026 stopped some computers from shutting down

Microsoft has identified issues upon installing the January 2026 Windows security update. To address these issues, an out-of-band (OOB) update was released today, January 17, 2026.

– Connection and authentication failures in remote connection applications: This issue affects multiple platforms including Windows 11, version 25H2; Windows 10, version 22H2 ESU; and Windows Server 2025. See the bottom of this message for the complete list of affected products.

-Devices with Secure Launch might fail to shut down or hibernate: This issue only affects Windows 11, version 23H2.