system
2
Impossible to answer when you haven’t provided any information.
- How do you know it’s Avast that makes it not “run” ? Explain what you mean by “run”
- Which Avast product do you use
- Which version number
- Does it work when Avast shields are off?
- If yes, which shield or which feature?
- Is your problem printing or scanning?
- Is the printer connected to the router or some sort of a USB connection to your computer?
Added later:
- What’s your computer - 32 or 64 bit?
- Do you try to run a scan using Canon Solutions menu or some other way?
Just FYI - printing and scanning work fine on XP 32 bit with Avast free AV, and on Windows7 64 bit, the latter is NOT under Avast control, but I might be able to tell you what a 64bit Win8 system would require.