G’day to you all.
I am slowly doing my nut here. I am hoping someone can help me here. I have Avast Internet Security. which I have just renewed for about the 5th year. I have tried the help line here for Aust. doesn’t matter what time I call it - it’s always engaged 24/7. Thats getting to me as well. What I need is to get my Master password. Avast have asked me for sooo many passwords I dont have a clue which one’s right. I have several things I need to activate, but I cant get passed “settings” without a password to go forward. Can anyone help me??? If you have instructions normal talking please not technical. No one wants to help me or reply to me which really gets up my nose. Before I end up with a panic attack lol. 
Hope to hear from someone. Have a nice day!!
If you lost your password for the avast av, you will need to perform a clean installation of avast to reset it.
Thank you Eddy. Looks like I dont have a choice. :-\ :o >:( Best wishes Pammie Australia.
At least it is not hard to do.
1]
Download the latest version of avast
https://forum.avast.com/index.php?topic=187663.0
2]
Download and run avastclear
https://www.avast.com/uninstall-utility
3]
Run the installer for the version you have downloaded