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Trying to boot from a usb stick In win 10 I get the message "Verifying shim SBAT data failed: Security Policy ViolationSomething has gone seriously wrong: SBAT self-check failed: Security Policy Violation" Can someone help me resolve it? Is this from the latest windows update?
This seems to have started right after a win update but I'm not sure if it's a coincident or not. Thanks for any help
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Dave, the registry change works only if you make it BEFORE applying the august update, for example before restarting after update. After that SBAT is already changed. I suppose it is a change in the UEFI itself, because I cannot boot a Ventoy flash drive even if the hard disk is cleaned and deinitialized (diskpart, clean all)
Source:
https://learn.microsoft.com/en-us/windows/release-health/status-windows-11-23H2
There are some workarounds in the link.
I have disabled secure boot,
still i am not getting option for choosing windows or linux,
Plz help me.
I did add this registry that someone mentioned, but it didn't work for me so I uninstalled updates. Still no progress. Even worse because now after uninstalled update I had critical failure of Start Menu. After I reinstalled those updates I went ahead to turn off secure boot in bios. It did work but is not a solution for me. On my Dell latitude when you update windows it often updates bios as well. I think that somehow this update managed to screw up my bios. I will be reinstalling grub probably and might give some update on it.
Hi, Steve
Enter BIOS/UEFI, set a password for the supervisor, this should enable the option to disable secure boot.
Felipe, I tried Dave's suggestions but I just went and took the security off in the bios. This works for me.
