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

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

The January update for Windows 11 has been met with considerable backlash, primarily due to reports of PCs refusing to shut down and displaying critical errors. A particularly alarming issue is the ...

Microsoft's January 2026 Patch Tuesday update – already notorious for causing serious issues – is now being blamed for slowing down Nvidia graphics cards. While Nvidia ...

Nvidia has confirmed that it's aware of Windows 11 gaming issues after the KB5074109 January 2026 Update and is looking into ...

Microsoft has released another emergency Windows 11 update after a January patch triggered widespread app crashes, Outlook ...

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

Microsoft’s first big Windows 11 refresh of the year is going so badly that the company is telling people to pull the update ...

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

Windows 11 Insider Preview Build 28020.1546 (KB5074176) fixes issues with OneDrive and Dropbox, improving stability for ...

Microsoft released yesterday a second wave of Windows 11 emergency updates to address an issue causing some apps to become ...

Microsoft has released a fresh emergency update for Windows 11 users to fix Outlook crashes and cloud file errors caused by the January update. Here's what the patch addresses.