Anyone who installed the Windows 10 updates last week may encounter a blue crash screen. Microsoft is working on a solution, but you can also temporarily solve the problem yourself.
These are errors that appear after the installation of KB5021233, which was installed on Patch Tuesday, December 13. That update should mainly restore the camera app that did not respond with little memory.
Now Microsoft says that update could sometimes lead to a crash with a so-called Blue Screen of Death (BSOD). That is due to an error with file versions of hidparse.sys in the system32 folder and system32/drivers folder of the Windows directory. This can cause the digital signature validation to fail, causing users to receive the 0xc000021a error.
The error occurs in versions 22H2, 21H2, 21H1 and 20H2 of Windows 10. The server edition should not experience any problems.
Microsoft says it is working on a solution, but until then, there is a temporary detour. However, the company emphasizes that users should not use any other method and should not remove hidparse.sys under any circumstances.
Specifically, users must use Windows Recovery Environment (WinRE). That is the environment that you (often automatically) get in the event of an incorrect startup procedure and where you can choose, among other things, to restore Windows or to boot from a USB drive.