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

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

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

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

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

If your Windows 11 computer is stuck at Edit Boot Options for screen, follow the below solutions. Reset the CMOS Battery Use a wired keyboard Disable the Edit Boot Options screen Reset BIOS to its ...

Microsoft has posted an online bulletin confirming that the company is investigating reports that state Windows 11's latest ...

In a surprising turn of events, Microsoft has confirmed that its January 2026 security update, KB5074109, is causing significant boot issues for some Windows 11 users. This latest development ...

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.

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

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. As if things weren’t bad enough for Microsoft Windows users ...