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

It's not just January's one.

After the first update stopped PCs from shutting down or going to sleep, the latest one halts the boot-up process. Microsoft ...

Neowin also notes another dark side to this latest issue. “Interestingly, Microsoft came up with a technical solution for ...

Microsoft is investigating reports of serious boot failures affecting Windows 11 devices following the January 2026 security updates. Users have reported encountering “UNMOUNTABLE_BOOT_VOLUME” errors, ...

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

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 ...

Today I was humiliating bots on quake & got bored & decided to watch a movie on telly. So I Ieft the computer on the quake menu & turned the monitor off (useally I just let the screensaver take over & ...

Everyone knows you need to keep your operating system up to date, but what happens when a company botches the update and ...

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 ...

Windows 11 KB5074109 is wreaking havoc thanks to several issues, with the most serious keeping users out of the operating ...