: This program deletes the Canon ports that the installer is failing to overwrite. Restart your computer after running it and try the installation again. 2. Perform a Clean Driver Wipe
Open File Explorer and navigate to: C:\Windows\System32\spool\PRINTERS
Open the Services app by typing services.msc in the Windows search bar. Find , right-click it, and select Stop .
If a previous installation failed, orphaned registry keys or lingering driver files will cause the port monitor installation to collide and fail. Remove the Printer and Existing Software Open the and click on Programs and Features .
Right-click the downloaded Canon driver installer file ( .exe ). Select .
The Print Spooler service manages all print jobs and drivers. If it is stuck, disabled, or corrupted, the installer cannot load the new port monitor.