I have an old, but good, printer Canon LBP-660. I run Widows XP, and suddenly (when i installed McFee) the program said: the port "lpt1" does not exist. Now I can not find the 2000-driver which I know functions. It did function on my computer! Something has happened, but what?
More aboutport lpt1 exist
I would uninstall McAfee, and use MS-Security Essentials or AVGFree.
Check your BIOS settings to ensure the LPT1 is enabled.