“Here’s the trick,” Marco said. He clicked “Add manually” and chose “Add a local printer or network printer with manual settings.” He selected “Use an existing port” (USB001) and then under Manufacturer , picked Canon . In the right pane, instead of “MG3100 series,” he scrolled down and selected “Canon Inkjet Printer” or sometimes “Canon IJ Network Driver” for USB. If that wasn’t there, he used Generic > Text Only just to test communication.
“Classic,” Marco said. “Canon stopped releasing new drivers for the MG3100 years ago, and Windows 11 has stricter driver signing and security. But that doesn’t mean it’s dead.” mg3100 driver windows 11
He walked her through the fix: