Fix for a BitLocker enabled system if you don’t have the recovery key BUT you do need to have local admin rights (might be a bit confusing without the accompanying screenshots), I haven’t validated this myself but it’s been sent out as a fix by our internal IT:
Start Computer
Press ESC (this is on the BitLocker passcode entry screen and takes you into BitLocker Recovery mode)
Press ESC again
Skip drive
Choose Troubleshoot
Choose Advanced options
Choose Command Prompt
Write command “bcdedit /set {default} safeboot minimal” and press enter. Afterwards write command “exit” and restart pc.
During boot enter Bitlocker and windows will run in to safe mode – there you will need enter Local Admin login.
Open browser and location C:\Windows\System32\drivers\CrowdStrike\
Delete all files with starting “C-00000291*
Once its deleted, open C:\Windows\System32\cmd.exe
Write command “bcdedit /deletevalue {default} safeboot
Restart computer and normally login – computer should work
In case it doesn’t work make sure in step 10 you removed proper file “291” have to be in first part not second or third.