Click on add/remove a program to access the list of installed applications. Just click on the restart button and then go to the main menu. If you have already installed Avast Antivirus and want to update to the latest version? Then download the Avast offline installer setup from this page and install it on your computer directly.Īfter it is completed, it will ask you to restart your computer for an avast antivirus update. In order to start the downloading process, simply click on the download link. If you want to install Avast Antivirus then you have to download Avast Free Antivirus offline installer setup.