Splwow64.exe - The program cant start because x2util6.dll is missing from your computer

You need to add the user account to the local admin group or use an account which has admin access to edit the registry.

  • Open Regedit (e.g. click Start -> run ->  type regedit and press Enter) navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Environments\Windows x64\Drivers  --> under this key, there will be a key Version-3 the sub-keys under these contain the printer driver configuration information. 
  • Delete the XEROX printer driver sub-key inside Version-3
  •  open a Command Prompt window 
  •  Type the command        net stop spooler
  • open Windows Explorer

navigate to C:\WINDOWS\system32\spool\printers\ and delete any files there.  By default, this is where the print spooler stores print files and navigate to C:\WINDOWS\system32\spool\drivers\x64\3 and delete all of the files and sub-folders as well.

Start the print spooler : net start spooler

 Re-Add the printer and test.