I got the attached screenshot as a warning after the latest update for Windows version 20H2 (Avast ver. 20.9.2437 - build 20.9.5758.607).
I was given the option to BLOCK or ALLOW.
I chose ALLOW as I knew the app was just Edge.
Thought this was just a false positive from the new Windows but I also notice I didn’t have access to stored passwords (auto fill login info) until I restarted the browser.
EDIT: Found ALLOW APP setting and removed it and Avast produced the same warning and results. Think this is a bug with the new Chromium Edge built into the update, even though this isnt a fresh install.
Just did a fresh install and upgrade to Windows 20H2 on another PC and got an error from Microsoft trying to download Avast on Edge (second run of Edge to get rid of ‘Whats New’ page).
Dont know if Avast needs to contact MS but ya’all probably have better luck than my lonely voice shouting on MS/TechNet forum
I did report the app as safe too.
EDIT: Avast gave me the same warning dialog after it got installed and I reopened Edge on the machine I just did the fresh install on as well.