This guide provides everything you need to know about downloading, installing, and using Canon Service Tool v3900 safely. What is Canon Service Tool v3900?

: Includes advanced nozzle check patterns and cleaning cycles to resolve stubborn clogs.

The hunt for a free service tool is a well-known vector for malware and tech support scams. Scammers create bogus driver and support sites that look professional but are designed to infect your computer or trick you into calling a fake support number for a fee. download a driver or tool from any site that is not the official Canon website, and be highly suspicious of any page that displays an error and prompts you to call a phone number for assistance. As one security report bluntly states, "Never download a driver from anywhere other than the official Canon site. As long as you’re on Canon.com, you can feel reassured you are very likely not being scammed".