Click the button. A "A function was finished" message should appear.

Always run the downloaded .zip or .exe through VirusTotal.

Clears the 5B00 or 1700 error codes.

The original Canon Service Tool is not officially distributed to the public. Most versions found online are "Repacks." A usually includes:

Canon Service Tool V4905 Repack: The Ultimate Guide to Resetting Your Printer