Microsoft’s CA-2023 Secure Boot update broke PCs. Learn why UEFI firmware failed, how vendors reacted, and how to fix your boot issues.

A series of Windows 11 boot issues reported by users seems to have a root cause that stems from a bad December software update that was pushed out. According to Microsoft, a bad January update ...

Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors after installing the January 2026 Patch Tuesday security updates. The issue ...

Microsoft is rolling out critical Secure Boot certificate updates to Windows 11 systems, with PCWorld reporting that current certificates expire in June 2026. Users must install quality updates and ...