Windows 10 occasionally fails to deploy printers to the PC when you log in, or fails to clear printers when you log out. So when you log back in the printers can install twice, conflicting with one another.

This is a quick fix.


You'll need to log off and back in again at the end of the document,



This fix can sometimes work too  if you are having general printing problems and showing errors, but only have one printer showing. Follow the instructions and see. The printers will be installed once you log back in again.


Click on Start>Settings (Cog)



Select Devices:



Select Printers and Scanners:



Take a look to see how many 'Photocopiers' there are. If more than one, select the BOTH and click Remove Device:



Log out and log in again.


You should find there is just one printer. Try printing again.