Make sure that the printer port is configured appropriately.

1. Log on as a user account with administrator privilege.

2. Select items from the Start menu as shown below.

• In Windows 7, select Devices and Printers from the Start menu.
• In Windows Vista, select the Start menu > Control Panel > Hardware and Sound > Printers.
• In Windows XP, select the Start menu > Control Panel > Printers and Other Hardware > Printers and Faxes.

3. Open the properties of the printer driver for the machine.

• In Windows 7, right-click the "Canon XXX Printer" icon (where "XXX" is your machine's name), then select Printer properties.
• In Windows Vista or Windows XP, right-click the "Canon XXX Printer" icon (where "XXX" is your machine's name), then select Properties.

4. Click the Ports tab to confirm the port settings.

Make sure that a port named "USBnnn" (where "n" is a number) with "Canon XXX Printer" appearing in the Printer column is selected for Print to the following port(s).