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It's time for our second Ask Microsoft Anything (AMA) about updating Secure Boot certificates on your Windows devices before they expire in June of 2026. If you've already bookmarked Secure Boot play...
Heather_Poulsen
Updated Jan 29, 2026
djfroh
Feb 05, 2026Copper Contributor
I have some models where the DB and DBx update succeeds, but the KEK fails (gives a specific Access Denied, which can be resolved with booting into the BIOS itself).
Is there any issue in not having the KEK updated?
- mihiFeb 05, 2026Copper Contributor
You won't receive any future DBX updates if the KEK is not updated.
But maybe the vendor will still submit a signed KEK update or a firmware update for your device so it can be updated automatically in the future. If not, you'd probably need to apply it manually in the UEFI setup.