# Satisfactory Server Won't Connect – Connection Failed & Port 7777

Satisfactory dedicated server won't connect? Connection failed, port 7777 UDP, query port, firewall & server token – fix connection issues.

**Quick answer:** Satisfactory connection issues: open **port 7777 UDP** (+ query port), check **server token** and match **client/server version**.

**If you landed here:** "Connection failed", timeout on join or server not in server manager.

## Related

- [Satisfactory won't start](/en/gameserver/satisfactory/server-startet-nicht)
- [Install Satisfactory](/en/gameserver/satisfactory/installation)
- [Satisfactory performance](/en/gameserver/satisfactory/optimize)
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