Overnight Microsoft’s subcontractor readied their servers to push updates. However one update was added to list that wasn’t ready for primetime, and it caused issues world wide when computers couldn’t startup.
The fix was to remove the problem file and rebooting, easy. Unless your computer had BitLocker enable. Thus making it very difficult to gain access to the files that needed to be removed. Hopefully you have a copy of your BitLocker key, to unlock your drive. People that enabled BitLocker and didn’t keep a copy of their key, maybe locked out of their drive.
After you have the BitLocker key:
C: (return)
cd \Windows\System32 (return)
cd drivers\crowdstrike (return)
del C-00000291.sys (return) dir C-00000291.sys (return)
exit (return)