Event details

Join us in May for our fourth Ask Microsoft Anything (AMA) about updating Secure Boot certificates on your Windows devices before they start expiring in June of 2026. If you've already bookmarked Sec...
Heather_Poulsen
Updated May 18, 2026
AMA
Technical Takeoff
IvanCardim's avatar
IvanCardim
Icon for Microsoft rankMicrosoft
May 18, 2026

This event indicates that Windows can't apply the KEK 2023 due to a known limitation in the firmware - the new key can only be applied if new firmware is installed.

Claude_Boucher_OEM's avatar
Claude_Boucher_OEM
Brass Contributor
May 18, 2026

This can be something else, MS provide a KEK that is refused by the Firmware, but a correct one exist and can be install with a script.