I'm sorry about the issue. What's the model of your Canon Pixma printer, such as MG5520 or MX922, etc.?
Is printing currently working fine?
Is there any error or message when scanning?
Do you have windows xp, vista, or 7, or 8, 10?
Can we do a remote support session, so I can troubleshoot the issue directly on your computer together with you?
Please reply at the box below. Thank you,