The Canon MF Port Monitor is a utility that comes with Canon's multifunction printers (MFPs), allowing users to monitor and manage print jobs and communication between the computer and the printer.
If the error persists, try manually registering the required DLL file: could not install canon mf port monitor exclusive
If your Canon MF supports Ethernet or Wi-Fi, disconnect the USB cable. Install using the "Network" or "WSD" (Web Services on Devices) option. The port monitor error rarely appears on network installations because they use Standard TCP/IP Port, not the proprietary Canon MF Port. The Canon MF Port Monitor is a utility
While this error is mostly software-related, a faulty USB connection can confuse the installer. Try a different USB port (preferably directly on the motherboard, not a hub) and a known-good cable. For network connections, ensure the printer has a static IP. The port monitor error rarely appears on network