Read my detailed uninstall instructions for Windows 7, Windows 8, Windows 10, and Mac. To completely remove Avast, go to “Control Panel”, click “Uninstall a Program”, select Avast from the programs list, and click “Uninstall”.
You can find step-by-step instructions for disabling Avast shields on Windows here. Right-click on the Avast icon on the taskbar, click on “Avast shield controls”, and select “Disable permanently”. Short on time? Here’s how to disable & remove Avast in 2022: