Try these methods in order, from simplest to most advanced.
The installer lacks administrative rights to create new system ports.
To help pinpoint the exact fix for your setup, could you provide a bit more context? Please let me know:
via the registry if the basic steps don't work. could not install canon mf port monitor
Unlike standard USB printers that use basic Windows drivers, Canon MF-series printers often require a proprietary "port monitor" to handle advanced scanning, status alerts, and bidirectional communication. When you see the error "Could not install Canon MF port monitor," your PC has failed to register this critical piece of software.
The "Could Not Install Canon MF Port Monitor" error is a common frustration when setting up Canon imageCLASS multi-function printers. This error typically halts the installation process, leaving your computer unable to communicate with the printer over the network or via USB.
Previous, corrupted installations of Canon drivers block new files from writing. Try these methods in order, from simplest to most advanced
Press Windows Key + R , type appwiz.cpl , and press to open Programs and Features.
Strict firewall rules or aggressive antivirus heuristics can block the setup file from executing scripts required to install custom ports. Open your antivirus or Windows Security dashboard. Temporarily disable and the Firewall . Disconnect your printer's USB cable from the PC. Run the Canon driver installer.
: Sometimes "Controlled folder access" blocks the port monitor from writing to system folders. You can try temporarily disabling it under Windows Security > Virus & threat protection > Manage ransomware protection . Please let me know: via the registry if
Open the extracted folder and navigate to the or 32bit / 64bit subfolder. Look for a file named DelDrv (or DelDrv.exe ). Right-click DelDrv and choose Run as administrator .
If the full "MF Drivers" package keeps failing, try the standalone or Generic Plus PCL6 driver from the Canon support website. These drivers are often leaner and less prone to Port Monitor errors. Download the specific UFR II driver for your model. During installation, choose Custom Installation .
Understanding the root cause helps prevent the issue from happening again. The Canon MF Port Monitor is a specific software sub-component that manages communication between your computer's USB/network ports and the printer driver. The installation fails when:
Return to the Services window, right-click , and select Start . Method 3: Run the Installer with Administrator Privileges