Check windows 10/11 installation

In command prompt as superuser

DISM.exe /Online /Cleanup-image /Restorehealth

sfc /scannow

Run cmd for group policy editor

gpedit.msc

Using System File Checker in Windows

1. In the search box on the taskbar, type command prompt, and right-click or press and hold Command Prompt (Desktop app) from the list of results. Select Run as administrator, and then select Yes.
2. Type DISM.exe /Online /Cleanup-image /Restorehealth (note the space before each "/"), and then press Enter. (Note: This step may take a few minutes to start and complete.)
3. After you see a message that says "The operation completed successfully," type sfc /scannow (note the space between "sfc" and "/") and press Enter.