When I must install a new version of avast! antivirus:
before, I must erase the old version of avast and then install the new version,
or I can only run the new avast! file(.exe) and (overwrite) the old?
Could you tell me a solution?
Sorry for my english!!(I'm a boy)
Thank you.
![Undecided :-\](https://forum.avast.com/Smileys/default/undecided.gif)