how to install battleye for arma reforger

Open your Arma Reforger install folder, go into the BattlEye folder, and run Install_BattlEye.bat as administrator. That is the manual install method referenced in community guidance for Reforger.

Steps

1. Open Steam.
2. Go to Library → Arma Reforger.
3. Right-click the game → Manage → Browse local files.
4. Open the BattlEye folder.
5. Right-click Install_BattlEye.bat and choose Run as administrator.
6. Restart the game after it finishes.

If it still fails

• Verify the game files in Steam.
• Make sure BattlEye-related files are not blocked by your firewall or antivirus.
• Reboot the PC and try again.
• If you are on a server and BattlEye config is broken, server-side reinstall/rebuild steps may be needed.

Notes

BattlEye is the official anti-cheat for Arma Reforger, and it is required for crossplay servers.

TL;DR: find the game’s BattlEye folder and run Install_BattlEye.bat as admin, then relaunch the game.