One of the drivers can't be deleted (Canon MF720C Series UFRIILT) because it is in use. I've tried rebooting and removing it again, but I keep getting the same message. I tried reinstalling and it's also failing again.
The printer itself is gone from the list, so I can't see if there's a queue.The printer is turned off. Should I just delete the windows systems files that I see in properties? (C:\WINDOWS\system32\spool\DRIVERS\x64\3)