does that include Powershell?
right click start
choose powershell (admin)
does it work?
If it does, then do option 2 - https://www.tenforums.com/tutorials/113380-how-enable-disable-controlled-folder-access-windows-10-a.html#option2
If it doesn't work, we can try it from safe mode and hope it works there
at desktop, open start/power
while holding left shift, click restart button
PC should load into a blue menu
- choose troubleshoot
- choose advanced
- choose startup options
- click the restart button
- choose a safe mode (it doesn't matter which) by using number associated with it.
- Pc will restart and load safe mode
open powershell again and try option 2
if that still doesn't work, go back into the blue menu like I showed above and try system restore and see if there is a restore date prior to changes
- System Restore