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EOS Registration Failed

Tags: eos, crossplay, ports, troubleshooting

EOS registration failures prevent crossplay and can hide your server from console players. Fixing ports and crossplay settings usually resolves it.

Decide if you need crossplay

  • If you do not need crossplay, there is no CrossplayEnabled property to switch off - crossplay is the result of EAC + LiteNetLib + ServerVisibility 2, so change that combination instead. See the Crossplay Setup Guide.
  • Crossplay requires vanilla gameplay and EAC enabled.

Open the required ports

PortsProtocolUse
26900-26903UDP/TCPGame and query traffic
26904-26905UDP/TCPEOS crossplay registration

Verify server identity

  • Use a unique server name and valid characters.
  • Ensure system time is correct on the host.

Confirm in logs

  • Restart the server after config or firewall changes.
  • Check for successful EOS registration messages.

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