Microsoft is investigating a recognized difficulty that causes a Blue Display screen of Dying (BSOD) with errors 0xc000021a after putting in the Home windows 10 KB5021233 cumulative replace launched in the course of the Tuesday Patch this month.
The corporate warned over the weekend that “after putting in KB5021233, some Home windows gadgets might launch an error (0xc000021a) with a blue display screen”.
This comes after a stream of customers reported on Redmond’s personal group web site. [1, 2, 3] and Reddit [1, 2, 3]some report that the replace was rolled again mechanically or they have been capable of repair the issue after a system restore.
The recognized difficulty is most certainly on account of an incompatibility between the file variations of hidparse.sys in system32 and system32/drivers within the Home windows folder which “might trigger signature verification to fail in the course of the cleanup course of”.
The checklist of affected platforms solely contains shopper variations of Home windows 10, from Home windows 10 20H2 to the newest model, Home windows 10 22H2.
Redmond added that it’s already engaged on a repair to handle this newly adopted difficulty, however has not but shared when it will likely be out there.
Workaround for affected Home windows 10 methods
Nonetheless, the corporate shared a workaround to work across the blue display screen difficulty and reboot the affected methods as anticipated.
This requires customers to repeat the hidparse.sys file from the system32drivers folder to system32 through the Home windows Restoration Atmosphere (WinRE) in order that signature verification now not fails throughout cleanup.
To mitigate this difficulty on affected gadgets, you might want to observe these steps:
- You will want to enter the Home windows Restoration Atmosphere. In case your system didn’t begin WinRE mechanically, please see WinRE entry factors.
- Choose the Troubleshoot button.
- Choose the “Begin restoration, troubleshooting and diagnostic instruments” button.
- Choose the “Superior Choices” button.
- Choose the “Command Immediate” button and wait on your system to reboot if obligatory.
- Your system ought to reboot right into a Command Immediate window. Chances are you’ll have to log in to your system along with your password earlier than you get to the Command Immediate window.
- Run the next command (Vital: If Home windows just isn’t put in in C:home windows, you have to to change the command in keeping with your atmosphere): xcopy C: .sys
- After the earlier command completes, sort: exit
- Choose the “Proceed” button.
- Home windows ought to now begin as anticipated.
“It isn’t really useful to observe any workarounds apart from these prompt above. We don’t suggest deleting hidparse.sys out of your WindowsSystem32 folder,” Microsoft Additional.
Redmond can be investigate a known issue linked to this month’s Home windows Server Patch Tuesday updates that triggered bugs when creating new digital machines on some Hyper-V hosts.
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