In the same window, click on any remaining printer. Click Print server properties at the top of the window. Go to the Ports tab. Look for any ports labeled Canon MF NP Port or similar.
Encountering the error during your Canon printer setup can be incredibly frustrating. This error typically occurs when the installer fails to register the virtual port required for your multi-function (MF) printer to communicate with your computer.
Third-party antivirus or firewall blocking the installation. could not install canon mf port monitor
Temporarily turn it off for both private and public networks. Try running the Canon driver installer again.
Click and navigate to the folder where you extracted the Canon driver files (look for a subfolder containing .inf files). In the same window, click on any remaining printer
The installer lacking administrative rights to modify system ports.
How to Fix the "Could Not Install Canon MF Port Monitor" Error Look for any ports labeled Canon MF NP Port or similar
If the specific "MF Port" simply refuses to install, you can bypass the Canon port monitor altogether by utilizing a standard Windows network port. This works perfectly for network-connected printers.
The Windows print spooler service hanging or failing. Step 1: Run the Installer as Administrator
Remember to turn your firewall and antivirus back on immediately after testing. Step 5: Install the Driver Manually via Device Manager