Sometimes things in Windows just don't want to work. And sometimes you just can't find the solution...or are too lazy to find the exact issue. In this case, you can use the easy route to just reinstall all Windows Applications.
Press the Windows Key and r simultaneously. A little window on the bottom left will open. In this, type the word "powershell" and press enter.
To obtain administrator rights, type:
In the powershell, write:
If you cannot switch it off using the usual way, use the powershell:
Restart-Computer is the magic word.