I've seen this all over the web, but I can't seem to find a good answer. This customer's computer is running the Fall Creators Update of Windows 10. I cannot open Device Manager as it says I am blocked. The publisher is coming up as unknown. This is also making it so I cannot install updates.
If I go to the Administrator (Built-In), everything does work. I have already tried to...
SFC /Scannow. Some errors could not be repaired, but I analyzed the log and did not see any issues.
DISM /RestoreHealth, no issues.
Created a new user account and made an Administrator, same issue in this new account.
Took the user accounts to Local Limited instead of Admin, then reversed, no luck.