What if I don't have the IJ Scan Utility? For the PIXMA MP230, MX392, MX450 Series, MX722 and MX922 , the IJ Scan Utility is included with the scanner driver.
This article explains what to do if you see the error "You do not have permission to open the application “Canon IJScanner###" when scanning after installing the ICA driver for your scanner or multifunction printer on macOS 11.5.