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

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

Another out of band update has been issued to Windows 11 users to address a major bug that caused Outlook to become ...

Windows 11 KB5078127 is an 'out-of-band' patch to fix an issue that broke Outlook Classic (POP, PST) after January 2026 Patch ...

The January update for Windows 11 has broken numerous modems for security reasons. Users aren't happy about it. Here's what ...

Microsoft’s first Windows 11 security update of 2026 broke shutdowns and some Remote Desktop sign-ins. Microsoft has released ...

This comes just hours after reports that another emergency update has been issued by Microsoft to affect other problems ...

In confirmed cases, Windows 11 boot failure occurs post-update, with the machine stuck at a black screen and unable to ...

Microsoft rolls out Windows 11 Canary Build 28020.1495 (KB5074168) with bug fixes, .webp wallpaper support, and known File ...

Last week's security patch is the latest buggy update that impaired some PCs. Take these steps before and after an update to ...

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

Microsoft confirmed that the KB5074109 January Windows 11 security update causes the classic Outlook desktop client to freeze ...