Uninstall Avast with AVASTCLEAR
Avast Clean Uninstall:
Download Uninstall Utility:
https://www.avast.com/en-us/uninstall-utility
If you would like to delete your folders manually, the necessary folder to delete can be found here:
C:\Program Files\AVAST Software
C:\Program Files (x86)\AVAST Software
C:\ProgramData\AVAST Software
C:\ProgramData\CloudCareDelete these keys from your Registry Editor:
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\AVAST Software
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\AVAST Software, also please clear your temp folder and system root\temp folder as well:
C:\Users\(username)\AppData\Local\Temp
C:\Windows\Temp