It seems there is 1 file causing troubles.
Please try the following:
Open an admin command promptSee if the message from sfc is "Windows Resource Protection did not find any integrity violation"
Open an admin command prompt
Enter sfc/scannow again
If the message is different, try sfc, reboot, sfc, a few times.
After you have tried this a couple of times and the message is still not "Windows Resource Protection did not find any integrity violation", copy/paste the following command "DISM /Online /Cleanup-Image /RestoreHealth"
If SFC (system file check) has found a/some violation(s) you need to reboot in order for SFC to try to fix the problems.
If SFC can't fix the problems after a couple of tries, then you can try the dism commands, earlier is not necessary