Arma Reforger Dedicated Server – Windows

How to Set Up an Arma Reforger Dedicated Server – Windows

Step 1: Requirements

  • Windows 10 or 11 (64-bit) or Windows Server.
  • At least 8 GB RAM (more recommended depending on players).
  • Stable and fast internet connection (good upload speed).
  • Enough free disk space (minimum 20 GB).
  • SteamCMD (Steam command line tool).
  • Arma Reforger dedicated server files (downloaded via SteamCMD).
  • Open UDP ports 2302 (and optionally 2303, 2304) on firewall/router.

Step 2: Install SteamCMD

SteamCMD is the official command-line tool to download and update dedicated servers.

  1. Download SteamCMD for Windows from:
    https://developer.valvesoftware.com/wiki/SteamCMD
  2. Extract the zip file to a folder, for example:
    C:\steamcmd\
  3. Open Command Prompt (cmd) and navigate to that folder: bashKopiërenBewerkencd C:\steamcmd

Step 3: Download Arma Reforger Dedicated Server

  1. Run SteamCMD: KopiërenBewerkensteamcmd.exe
  2. Login anonymously: nginxKopiërenBewerkenlogin anonymous
  3. Set the install directory for the server files (create a folder first, e.g. C:\ArmaReforgerServer): mathematicaKopiërenBewerkenforce_install_dir C:\ArmaReforgerServer
  4. Download the Arma Reforger dedicated server (App ID: 1918700): nginxKopiërenBewerkenapp_update 1918700 validate
  5. Wait for the download and installation to finish, then exit SteamCMD: nginxKopiërenBewerkenquit

Step 4: Configure the Server

  1. Go to the installation folder C:\ArmaReforgerServer.
  2. Locate or create a server.cfg file to configure server settings.
  3. Common settings you can edit:
    • hostname: The server name shown to players iniKopiërenBewerkenhostname="My Arma Reforger Server"
    • password: Optional server password iniKopiërenBewerkenpassword="yourpassword"
    • maxplayers: Maximum number of players (e.g. 40) iniKopiërenBewerkenmaxplayers=40
    • port: Default is 2302 (make sure this port is open) iniKopiërenBewerkenport=2302
  4. You can also add mods or custom maps here if desired.

Step 5: Open Ports on Firewall and Router

Make sure the following UDP ports are open and forwarded to your server’s local IP address:

  • UDP port 2302 (required)
  • UDP ports 2303 and 2304 (optional for extended functionality)

Open these ports in:

  • Windows Defender Firewall (allow inbound connections)
  • Your router’s port forwarding settings

Step 6: Start the Server

  1. Open Command Prompt and navigate to the server folder: bashKopiërenBewerkencd C:\ArmaReforgerServer
  2. Run the server executable with the -server parameter: pgsqlKopiërenBewerkenArmaReforger.exe -server (If the executable has a different name, adjust accordingly.)
  3. The server will start and display logs and status info.

Step 7: Connect to the Server

  • Launch Arma Reforger game client.
  • Go to the Servers tab.
  • Find your server by name or connect directly using your public IP and port: cppKopiërenBewerkenyour.public.ip.address:2302
  • Join and play!

Bonus: Updating Your Server Automatically

Create a batch script called update_server.bat to update the server via SteamCMD:

batKopiërenBewerkencd C:\steamcmd
steamcmd.exe +login anonymous +force_install_dir C:\ArmaReforgerServer +app_update 1918700 validate +quit