Uncheck the box that says Query the printer and automatically select the driver to use , then click .
If you have tried all nine methods and still see , you have three final options:
Click . Wait a moment, then click The printer that I want isn't listed (or Add manually ).
Aggressive antivirus software or third-party firewalls can flag the creation of a new network/USB port monitor as suspicious activity and silently block it.
Click on any printer in the list, then click in the top menu bar. Go to the Ports tab. Look for any port named CNMN or containing Canon MF . Select the port and click Delete Port . Restart the installation. 5. Manually Register the Port Monitor (Advanced) could not install canon mf port monitor
The error is almost always a conflict with existing driver debris.
The error is almost always related to your Windows operating system, not a problem with your printer's hardware. It's frequently encountered by users on . The root cause can be one or more of the following:
The "Could Not Install Canon MF Port Monitor" error is usually solved by clearing out stuck print queues or wiping remnants of old printer drivers. If automated installers continue to fail, switching to a Standard Windows TCP/IP port provides a reliable alternative that bypasses the proprietary Canon installer software entirely.
Here are the most reliable, step-by-step methods to fix the "Could Not Install Canon MF Port Monitor" error. Uncheck the box that says Query the printer
In the left pane, expand > [Your Computer Name] .
Fix: Could Not Install Canon MF Port Monitor (Step-by-Step Guide)
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where the installer stops prematurely after selecting the printer or scanner options. Canon Community Direct Solutions Run Official Clean-up Tool : Locate the UNINSTAL.exe (spelled with one 'L') in the Look for any port named CNMN or containing Canon MF
Locate the .dll file for the port monitor inside the driver folder (usually named CNMN...dll ). Copy this file to C:\Windows\System32\ . Open Command Prompt as .
Using Windows 11 on an ARM64 device (like Snapdragon laptops) blocks incompatible x86/x64 kernel-mode drivers. Step 1: Run the Installer with Full Administrative Rights
Click "The printer that I want isn't listed" and follow the prompts to add a local printer using the USB or IP address port. How to Prevent Future Port Monitor Errors