Make sure you've updated before the deadline.

The Key Exchange Key (KEK) acts as an authority that allows Microsoft to update the other databases, like the DB and DBX that ...

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

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.

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that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems from 2011, which were superseded by their 2023 counterparts.

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 released Patch Tuesday updates for Windows 11 (KB5034765) and Windows 10 (KB5034763, and more) earlier this week. Alongside that, the company has also issued a reminder about the impending ...

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

Do you see Event ID 1796 in your Windows 11/10/Server logs? If the Secure update process cannot complete and fails with an error message— The Secure Boot update ...