Factorio Server Won't Connect – Port 34197 & server-settings

Quick answer: Factorio connection issues: port 34197 UDP, visibility: public in server-settings.json and matching mods.

If you landed here: Factorio shows "Connection failed", mod mismatch or server not findable.

Frequently asked questions (FAQ)

Which port for Factorio server?

34197 UDP (default). Open in server-settings.json and firewall/panel.

Factorio mod mismatch?

Mod versions on server and client must exactly match. Check server-mod-settings.json.

Factorio server not in LAN/internet list?

visibility public in server-settings.json. Port 34197 UDP open. Direct connect: IP:34197

NexoraHost

Minecraft, ARK, FiveM & 24+ games – 1-click install, mods allowed, from €4.99/mo.

Order now → Account

nexorahost.com · Maincubes FRA01 · 1 Tbit/s DDoS · 99,9 % Uptime