Considering that you are responding to a topic, the last post of which was 11 years ago to the day a lot of water has flowed under that bridge.

This was about avast 4, which is totally different and the version you mention, 8.0.1419 is also very old and no longer receiving updates on that program version. avast! 9.0.2021 is the latest version. There is currently a beta for avast 2015.10.0.2022 ongoing.