: Look for a file named UNINSTAL.exe (with one 'L') in the misc folder of your driver package . Run this as an Administrator to wipe orphaned files and registry entries.
The Windows Print Spooler service is holding onto a corrupted queue or locking printer ports.
, meaning if it fails to install, your computer may print but will likely fail to scan. Canon Community How to Fix the Installation Error If you are seeing this error, try these solutions: Run as Administrator could not install canon mf port monitor
, and if an error occurs, manually select a different port or add a new Standard TCP/IP Port using the printer's static IP address. Disable Windows Protected Print (WPP) : In some cases, Windows Protected Print can block third-party drivers. Check Print server properties
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Monitors Look for any key named "Canon MF Port Monitor" Right-click and delete only that specific key. : Look for a file named UNINSTAL
Turn off the Windows Defender Firewall temporarily if you do not use third-party security software. Run the Canon installer again as an administrator.
Follow the on-screen prompts to see if the installation completes without the port monitor error. Method 2: Restart and Clear the Print Spooler , meaning if it fails to install, your
Locate the downloaded Canon MF driver setup file ( Setup.exe ). Right-click the file and select .
If you are contacting IT support or Canon support, confirm you have done the following: