Here are the instructions that I send out for removing 3rd Party AV’s
You’ll notice that they come directly from Avast. :slight_smile:

   [b]Removing old third-party antivirus software before installing avast![/b]
   https://support.avast.com/index.php?languageid=1&group=eng&_m=knowledgebase&_a=viewarticle&kbarticleid=574      
   ( The removal tool for avast! Antivirus (should you ever need it) : http://files.avast.com/files/eng/aswclear6.exe)