My Avast Security won’t work and locks me out of most of it, and when I try to log into all the ways to get it changed that I have found online-it asks me for the password which I don’t have. In the Privacy Section there is no way to change the password there either. How do I sort the problem out?
Please provide more details, like what Avast product are you using, what OS etc.
Also screenshots would help understanding your issue.
Follow David’s guide here.