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

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

Some machines are failing to start after security updates, prompting yet another Microsoft investigation Microsoft is ...

Windows updates are meant to improve system stability, but sometimes after installing them, Windows may roll them back the next time you restart your computer. You might even see an “Undoing changes ...

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Given the aforementioned issues with Windows Update, and there ...