Microsoft’s first Windows 11 update of 2026 triggers shutdown bug, company issues emergency fix

Microsoft's first Windows 11 update of 2026, specifically KB5034763, caused shutdown and restart failures for some users. This out-of-band update, released on January 17, 2026, addressed a compatibility issue in the update process. A subsequent cumulative update has been released to resolve these issues without impacting data integrity or system performance.

Microsoft’s first Windows 11 update of 2026 triggers shutdown bug, company issues emergency fix
Microsoft's first Windows 11 update of 2026, specifically KB5034763, caused shutdown and restart failures for some users. This out-of-band update, released on January 17, 2026, addressed a compatibility issue in the update process. A subsequent cumulative update has been released to resolve these issues without impacting data integrity or system performance.