FiveM connection failed – most common cause?

Port 30120 TCP+UDP not open in firewall/panel. Second: server still starting or license key IP mismatch.

Server in list but join fails?

Set sv_endpointprivacy false, check firewall, enable OneSync. Players: F8 → connect IP:30120 to test.

Only some players can't join?

Often missing client mods/resources, outdated FiveM version or antivirus blocking FiveM.

FiveM Server Won't Connect – Connection Failed & Direct Connect

Quick answer: FiveM connection issues: open port 30120 TCP+UDP, set sv_endpointprivacy false and wait for server fully started (txAdmin green).

If you landed here: "Connection failed", "Failed to connect", timeout or server not in list.

FiveM won't start
FiveM lagging
OneSync error

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FiveM Server Won't Connect – Connection Failed & Direct Connect

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