Microsoft has posted an online bulletin confirming that the company is investigating reports that state Windows 11's latest security update has rendered some PCs unbootable.

Round and round we go.

Microsoft has linked recent reports of Windows 11 boot failures after installing the January 2026 updates to previously failed attempts to install the December 2025 security update, which left systems ...

A Windows 11 update (KB5058405) is causing a severe “recovery error” that prevents some PCs from booting. Primarily affecting enterprise VMs, some physical PCs are also impacted. Microsoft is ...

Microsoft's first update for Windows 11 in 2026 has been a buggy mess, to say the least. After reports of shutdown issues on ...

Struggling with Windows 11 Update Error 0x80070422? Discover proven fixes to resolve this frustrating issue quickly.

Inside the company, engineering teams have been pulled into a "swarming" effort to stabilize Windows 11's core behavior – a shift that acknowledges how far the ...