Create a NUL: Printer Port

  1. Select Start > Control Panel > Devices and Printers.
  2. Click Add a printer
  3. Select The printer that I want isn’t listed.
  4. Select Add a local printer or network printer as an Administrator.
  5. Select The printer that I want isn't listed.
  6. Select Add a local printer or network printer with manual settings and click Next.
  7. Select Use an existing port
  8. Click the arrow to display all available ports in the drop-down list. Look for a port called NUL:. If the NUL: port is on your system, click Cancel; you do not need to do anything further. 
  9. If the NUL: port is not on your system, select Create a new port. Select Local Port from the drop-down list. Click Next. Enter NUL: for the port name.
  10. Click OK.
  11. Click Cancel.