rmk9785e said:
What kind of privileges are required to delete "%WinDir%\WinSxS\Backup" with /s /f /q flags? I executed it from CMD with Administrator privileges but received "Access is denied" errors.
You are right, it no longer works, I guess something has changed in 1903 or prior to it.
Mine is empty, so I have not received any errors, I copied it from Wise Cleaner, which cleans it.