Verifying shim SBAT data failed:

Mines 11 does the same

Was saying the same thing lol

Not being rude but to those saying to change something inside windows, idk about 10, but the message comes up on boot on 11 then shuts down you never even see an attemt to post, , I was dual booting, removed Linux, it's been working fine like that for years, but my bios has always shown my hdd as Ubuntu, even though its been running windows all this time, I believe Bitdefender total security is messing up, I had the pay version for years, soon as I didn't renew, it now grabs any files its doesn't like and deletes them, even when I know it's legit, I attempted to remove it, it would not kill processes for Bitdefender, and when I rebooted to attempt safe mode, all I get it that message, 2tb of games and all, and I'm gona attempt a few more things, I'll let y'all know how it goes, I used to be a computer tech, buuuut I didn't know Microsoft would decide to kill my windows.......😥

I didn't find this solution in the responses so I post it here since it helped me:

https://learn.microsoft.com/en-us/windows/release-health/status-windows-11-23h2#3377msgdesc

Helpful videos:

https://youtu.be/YtA5JIEsbWo?feature=shared

How to enter Bios (solving the problem with the sudden shutdown) : https://youtu.be/lwaAIsNA59k?feature=shared

Olá

Tenho dual boot no meu laptop e desativei o Secure Boot, windows iniciou normalmente