How to Add Mods to Your American Truck Simulator Server

Updated June 10, 2026 · By Host Havoc Technical Support Team

Adding mods to your American Truck Simulator server requires exporting mod package files from your local game client and uploading them to your server. Every player who wants to join your server must have the same mods installed on their own client.

This process also applies to Euro Truck Simulator 2 servers.

Enable the dev console

You must enable the dev console in your local game before you can export server packages.

  1. Navigate to your game's Documents folder:
    • ATS: C:\Users\<USERNAME>\Documents\American Truck Simulator\
    • ETS2: C:\Users\<USERNAME>\Documents\Euro Truck Simulator 2\
  2. Open config.cfg in a text editor such as Notepad.
  3. Find and set both of the following values to 1:
    uset g_developer "1"
uset g_console "1"
  4. Save and close the file.

Export server packages

  1. Install all mods you want to run on your server using your local game client.
  2. Launch the game and open Mod Manager.
  3. Activate each mod you want to run on the server.
  4. Open the console by pressing ~ and run the command export_server_packages.
  5. This exports server_packages.sii and server_packages.dat to your game's Documents folder.

Upload to the server

  1. Log in to the Game Control Panel and navigate to your server.
  2. Click Stop to stop the server.
  3. Click File Manager and navigate to ./userfiles/American Truck Simulator/ (or ./userfiles/Euro Truck Simulator 2/ for ETS2).
  4. Delete or rename the existing server_packages.sii and server_packages.dat files.
  5. Upload the new server_packages.sii and server_packages.dat from your Documents folder.
  6. Start the server back up.

For general configuration options, see edit server settings.