This site is for Avast Business products only. For articles on AVG Business products, see AVG Business Help. If you are in the right place but cannot find what you are looking for, please contact Avast Business Support for further assistance.

Installing Unmanaged Antivirus on Windows

This Article Applies to:

  • Avast Small Business Solutions
  • Avast Small Office Protection

For installation instructions for macOS and Linux, see Installing Unmanaged Antivirus on macOS and Installing Antivirus for Linux.


For the unmanaged Small Business Solutions and Small Office Protection, you can download the installer from (ensure you are on the Business tab). You can select the online or the offline installer for the subscription you have. The offline installer is mostly only required for devices in isolated/slow/limited networks, while the online installer will download all necessary files during setup.

Once you run the installer for the desired Antivirus version, you can click Install to install with default components, or you can select Customize to install with only those components you select.

Customizing Installation

  1. Copy the installer file to a location accessible by the end device
  2. Double-click the installer file to run it
  3. If asked, allow the application to make changes to the device
  4. Click Customize, then do one of the following:
    • Select Recommended protection to install all components
    • Select Minimal protection to install only File, Web, and Mail Shield
    • Select Custom protection so you can check and uncheck the specific components you would like to install. For information on which components are not recommended in a business environment, see Recommended Components for Servers and Workstations.
  5. Click Install and wait while Essential/Premium/Ultimate Business Security is installed on your device
  6. If prompted, restart the device

In some instances, you may need to perform the installation on devices in an isolated/offline network. To ensure your devices are configured properly, see Setting Up Antivirus in Isolated Networks.


Once you have installed Antivirus on your device, be sure to activate your subscription following the information in Managing Subscriptions.

Installing With a Logon Script

You can install Small Business Solutions/Small Office Protection as a logon script, as long as you change the file location to reflect the location and name of the install file on your network (\\server\install\avast_business_antivirus_setup.exe).

If you are not familiar with how to use a logon script with your domain, search the Microsoft website for your domain controller's OS and how to use logon scripts. This article details how to use logon scripts.