Arma 3 Server Won't Start – Mods, BattEye & server.cfg

Quick answer: Arma 3 won't start: read RPT log, update mods, check server.cfg and open ports 2302–2305 UDP.

If you landed here: Server crashes on start, BattEye/mod errors in logs or restart loop in panel.

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Frequently asked questions (FAQ)

Arma 3 server won't start – first steps?

Read RPT log (arma3server_x64_*.rpt). Common: mod version mismatch, BattEye error, bad server.cfg, port 2302 blocked.

Arma 3 mod mismatch?

Update all mods via Steam Workshop. Check mod list in server.cfg. Remove mods one by one to test.

Which ports for Arma 3?

2302 UDP (game) + 2303–2305 UDP. BattEye needs open UDP ports.

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