# DayZ Server Won't Start – Mods, BattEye & serverDZ.cfg

DayZ server won't start? Mod mismatch, BattEye error, serverDZ.cfg, port 2302 & SteamCMD – DayZ dedicated server troubleshooting.

**Quick answer:** DayZ won't start: **read logs**, **update mods**, check **serverDZ.cfg** and open ports **2302–2305 UDP**.

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

## Related

- [DayZ won't connect](/en/gameserver/dayz/server-verbindet-nicht)
- [DayZ common errors](/en/gameserver/dayz/server-common-errors-and-how-to-fix-them)
- [DayZ setup](/en/gameserver/dayz/setup)
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