Step 3: Select change again, next to update and repair.Method 1: Remove Avast From Control Panel Ensure that Apps & features is selected in the left.Right-click the Windows Start button and select Apps and Features from the menu that appears.Click on 'Change', once which components do you want to install screen appears, Uncheck SafeZone Browser and click on 'Change'. Select Avast Internet Security or Avast AV, click Change. Open Control Panel, click on Programs > Programs and Features.