The application refers to the user interface and all components in Avast Antivirus. Step 3: Once it is opened, you will getan window pop up where it will say you to drag the Avast icon into the Applications folder icon in that same window.Īvast Antivirus uses a database of known Virus definitions to identify malware and other threats on your PC, which is why it is important to ensure the Virus definitions are regularly updated. Step 2: When the download is complete, double-click the “.DMG” file you just downloaded. Step 1:Go Here to Download Avast for Mac.