Perfect for installing protection on "air-gapped" machines or devices in remote locations with poor connectivity.
You can find the latest versions of the standalone installers on the official Avast Installation Files page. Avast Offline Installation Files avast antivirus offline installer
You only download the large file once and can use it to install Avast on multiple PCs via a USB drive. avast antivirus offline installer
It allows you to install protection immediately after a clean OS install before the computer ever touches the internet. Official Download Links (2026) avast antivirus offline installer