Microsoft issued a second emergency Windows patch in January after earlier fixes caused new bugs, raising concerns about ...

January’s Patch Tuesday updates caused several serious issues, calling Microsoft’s quality control into question.

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

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

Microsoft shares more details about the boot failure bug triggered by the latest Patch Tuesday update, KB5074109, in Windows 11.

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

Microsoft today released software updates to plug a whopping 172 security holes in its Windows operating systems, including at least two vulnerabilities that are already being actively exploited.