When you try to print to a local printer which is attached to LPT1, you receive:

Error writing to LPT1, Access Denied.

If you installed and uninstalled a 3rd party Port Monitor, possibly as part of a network printing package, there may still be registry entries that need to be cleaned up.

1. Use Regedt32 to navigate to:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Print\Monitors

2. Delete any Port Monitor sub-keys that should no longer be installed.

3. Shutdown and restart your computer.