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

How to check your Windows PC for expiring security certificates - a big one is ending soon ...

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

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

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that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems from 2011, which were superseded by their 2023 counterparts.

Both features are key for security and B2B e-commerce, particularly as Microsoft works to integrate better extranet and cross-company authentication features in a Windows Server update due out in 2005 ...