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

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.

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Frequently asked questions (FAQ)

Satisfactory connection failed – most common cause?

Port 7777 UDP not open. Second: server still starting, wrong server token or client/server version mismatch.

Server in list but join fails?

Open both ports (game + query/beacon). Check host firewall and router. Server manager: regenerate token.

Which ports for Satisfactory?

7777 UDP (game). Query/beacon often 15000 or per panel – add all in firewall panel.

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