Update Avast Antivirus

Manage these settings at: Menu ▸ Settings (gear icon) ▸ Update

It is very important to regularly update both the program and the virus definitions to be sure you are protected from the latest threats.

Virus definitions

View information about your current virus definitions. Click Update to update now.

Expand Settings to configure Avast to update virus definitions automatically (default), manually, or notify you when a new version is available.


View which program version you are currently using. Click Update to update now.

Expand Settings to configure Avast to update program version automatically, manually, to download updates and notify you when ready to install, or notify you when an update is available.

Details and Proxy Settings

Under Details you can select your Internet connection method to optimize updates and make the process more reliable.

You can also set how often Avast checks for available updates.

Show notification box if an error occurs - A notification is displayed above the system clock when an error occurs during an update.

Configure Proxy Settings if needed. If you connect directly to the Internet you can ignore this section.

If you connect to the Internet through a proxy server and you know the proxy server details, select Specify proxy server and enter the proxy details:

  • Type - HTTP or SOCKS4
  • Address - Enter the address of your proxy server.
  • Port - Enter the port your proxy server uses.
  • Authentication type - If the proxy server requires authentication, specify the type and enter Username and Password.

Detailed instructions for updating your Avast software.