Microsoft has recently begun replacing expiring Secure Boot certificates on eligible Windows 11 systems running 24H2 and 25H2 ...

Microsoft is rolling out "Secure Boot Allowed Key Exchange Key (KEK) Update," which requires a system reboot to finish ...

Microsoft has started automatically replacing expiring Secure Boot certificates on eligible Windows 11 24H2 and 25H2 systems. Secure Boot is a security feature that blocks malicious software (like ...

Microsoft confirms systems without updated Secure Boot certificates will boot normally but lose some security protections.

Get ye to Windows Update, because there's a good chance you've got new Secure Boot certificates to install. Microsoft just announced that it will be refreshing those certificates, which were ...

In June 2025, Microsoft announced that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems from 2011, which were superseded by their 2023 counterparts.

Microsoft will use standard Windows 11 updates to keep Secure Boot working on existing PCs as the operating system's original certificates near their end. The company says Secure Boot certificates ...

Secure Boot protects your PC against bootkit malware. The Windows update refreshes expiring Secure Boot certificates. To install, head to Settings and select Windows Update. I typically advise Windows ...