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

Windows 10 KB5078885 ESU out with Secure Boot 2023, replacing expiring Secure Boot certificates from 2011. But it's a staged roll out.

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

Make sure you've updated before the deadline.

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

The February Windows update preview is extensive. It includes new Secure Boot certificates and app and settings backups.

TL;DR: Secure Boot certificates in Windows 10 and 11 will expire by June 2026, risking system security and compatibility. Microsoft is issuing new certificates through updates and OEM firmware ...

Microsoft is advising organizations to prepare their Windows Server environments for upcoming Secure Boot certificate updates. The changes are intended to maintain the integrity o ...

Microsoft has released the Windows 10 KB5078885 extended security update to fix the March 2026 Patch Tuesday vulnerabilities, ...

KB5077241 is now officially available, bringing Emoji 16.0, Sysmon integration, Secure Boot updates, and key Windows 11 ...

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that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems from 2011, which were superseded by their 2023 counterparts. As the clock ...

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 ...