If you’ve uninstalled Avast antivirus from your computer using Programs and Features or from Add/remove program in Control Panel you should know that Avast Uninstaller uninstalls the program but lefts behind some files and registry entries related to Avast in your computer, you can use Revo Uninstaller’s Advanced uninstall option to fully uninstall Avast including left over files in hard drive and in registry, if not you can also do the same thing using Avast Cleanup tool, this tool is not official one though.
Don’t confuse with the name if you’re looking for official tool from Avast which removes Avast from your computer when you failed to remove from Control Panel, here is the tool you’re looking for.
Using Avast Cleanup tool is quite simple, download the program zip file, extract its contents to a folder and run Avast Cleanup Tool executable, accept the terms and tool does the cleaning job.
Some antiviruses may flag this tool as malware, it is a false positive.
By using Avast cleanup tool you can able to remove unnecessary files and registry entries left on your Computer by Avast uninstaller after Avast uninstall from Control Panel.