Next to , ensure it is set to Main (or "All" if available). Click the Set button right next to it.

The genuine V1.050 is a small ZIP file (approximately 381 KB). Any executable claiming to be “Service Tool V1.050” that is significantly larger or that comes with an installer should be treated with extreme suspicion.

Triggers deep cleaning cycles directly from the interface.

If you need further help troubleshooting your specific model or navigating software alternatives, please let me know: What of Canon printer do you have?