A similar error code STOP 0xC000021A {Fatal System Error} can occur due to Windows Setup. Fix Blue Screen Error Code 0xC000021A ...

Can't install Windows 11 KB5062553 update? Worry not, follow these proven fixes to solve the error and related issues.

How to Fix the Problem If you’re encountering issues caused by update KB5041585, here are a few steps you can take to restore your computer’s normal operation: ...