Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors ...

A Windows security update bug has prevented some Windows 11 24H2 and 25H2 users from booting into their PCs, requiring them ...

It's not just January's one.

Microsoft is investigating reports of serious boot failures affecting Windows 11 devices following the January 2026 security ...

Microsoft has had to issue two out-of-band updates to fix its buggy Windows 11 patch.

Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.

A fresh wave of Windows 11 update trouble is making the rounds, and this one is about as disruptive as it gets: some PCs reportedly can’t boot after installing the latest January 2026 security update.

Windows 11 KB5074109 (January 2026 Update) is causing major issues on some PCs, and Microsoft has more details to share.

Microsoft issues second emergency patch for Windows this month - update your PC today ...

Microsoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after Windows 11 January ...

Microsoft issued a second emergency Windows patch in January after earlier fixes caused new bugs, raising concerns about ...

The error code 0xc000014C which may appear while booting up a computer points towards the Registry of the computer is corrupt as a result of which the system was ...