I have this same problem. The instant Avast starts up (which is on boot), it opens the Chrome window, in Chrome.

I don’t want to use Chrome on a regular basis but I have occasional use for it so I don’t want to uninstall it.

What I DO want is for Avast to NOT open up ANYTHING. I want it to do its job, period.

Yes, I made a mistake and missed the tiny little checkbox that said “Install Chrome”. I should not even have had to LOOK for it in the first place.

I don’t care what browser it uses. I just don’t want the startup thingy.

–grrrrs.