Welcome to the forum
There was no need to start a new topic. Search the board first before starting a new one please. There are already many threads about this one and likely one has the answer for you. Also if you ask something provide more information like what os, what version of Avast, what vps version etc. That will let us give more detailled/acurate help.
The latest vps solves some problems with false positives. Make sure you have it.