How to enable or disable crossplay on your Arma Reforger server

Arma Reforger crossplay is controlled in server_config.json. The important values are game.crossPlatform and game.supportedPlatforms.

1. Open your Arma Reforger server in the control panel.
2. Click Configuration Files.
3. Open server_config.json with Text Editor.

   

4. Set crossPlatform to true or false.
5. Set supportedPlatforms to the platforms you want to allow.
6. Click Save & Exit, then restart the server.

Example with PC and Xbox enabled:

"crossPlatform": true,
"supportedPlatforms": [
    "PLATFORM_PC",
    "PLATFORM_XBL"
]

If you only want PC players, remove the Xbox entry and set crossplay according to the behaviour you want for your community.

After changing the setting

Restart the server and test the setting from the game client. Ask another player to test as well if the change affects joining, permissions, PvP, crossplay, or admin access.

If it does not apply

Confirm the value was saved in the correct configuration file or panel field. Some games only read these settings during startup, so a full restart is required before the change is visible.