If the installer continues to fail at the port monitor stage, manually create a standard port:
: Windows blocking the installation of kernel-mode drivers, especially on ARM64 systems. could not install canon mf port monitor
Canon drivers often include a cleanup utility in the installation folder that removes deep-rooted files that a standard Windows uninstall misses. If the installer continues to fail at the
The "could not install Canon MF port monitor" error is almost always a . For 80% of users, simply running the installer as Administrator or cleaning the registry (Method 4) will solve it immediately. For the remaining 20%, disabling driver signature enforcement or using the "Add Printer" legacy wizard provides a reliable workaround. For 80% of users, simply running the installer
Practical steps:
Third-party antivirus or firewall blocking the installation.
If the spooler is not responding, it cannot register the new MF Port Monitor. Press , type services.msc , and press Enter. Find Print Spooler , right-click it, and select Stop .