Boot your PC into BIOS.
Go to the Security settings.
Find the option to reset Secure Boot to factory settings.
Save that setting and restart your PC to test if that resolves the problem.
Secure boot update failed to update SBAT with unknown error. Event 1796
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John Lowe
0
Reputation points
HP. Desktop running windows 11 UEFI and 2023 certificate applied. Secure boot update fails to update SBAT with unknown error event 1796. System shuts down without warning and immediately reboots.
Windows for home | Windows 11 | Windows update
1 answer
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DaveM121 915.1K Reputation points Independent Advisor2026-07-31T14:06:19.1766667+00:00 -
John Lowe 0 Reputation points
2026-08-01T12:36:57.88+00:00 Option to reset secure boot keys is greyed out
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DaveM121 915.1K Reputation points Independent Advisor
2026-08-02T06:09:01.1+00:00 Sorry, I was offline.
On the link below, Microsoft indicate that error is caused by a problem updating the security certificates, but a restart should resolve the problem.
When your system crashes, what happens, does it instantly shut down, or is there a black or blue screen with an error, or does it freeze up.
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