Sorry for the delay.
We will need some more information:
1. Are you setting the scanner up for the first time, or did it work ok previously?
2. Are you trying to scan to email or to a folder?
3. Is the machine on a network?
4. What operating system are you using?
5. Are you getting a specific error message?
Sorry, I am not getting notified of your replies and I am just seeing this now.
You will need to ensure you have the latest Windows 10 driver installed from the Canon website:
Let me know if that helps?