text: how do you uninstall avast totally off your computer?   q: how can i uninstall avast!?  a: you can uninstall avast! using add/remove programs in control panel. if any problem appears, use the avast! uninstall utility.  click on the start button.  select settings -> control panel (or control panel - it depends on your windows version) -> add/remove programs.  from the list of installed applications select avast! antivirus and click on change/remove button.  avast! setup will start. select uninstall and click on next.  a computer restart will be required after uninstalling avast!