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Troubleshooting

undecuple edited this page Nov 9, 2026 · 1 revision

Troubleshooting

Nobody can see anyone's room. Rooms belong to one game: players must run the same game (the same communication ID). Check the room list from the same address the others use.

A player connects but cannot reach the others. The usual cause is a player who connected to 127.0.0.1 or to a LAN address while others are elsewhere; everyone should use the same address the others use. Next, the game's own port on each player (3658 by default) must be reachable, or the host must run with -relay.

The server answers on TCP but UDP probes are ignored. The server answers a UDP probe only from the same IP address as the player's TCP connection. If your network changes the UDP source address (some proxies and VPN setups), the host can use -udp-any-source; see UDP source address.

Many packets are dropped. On the current development version a rate limit applies per source address (-max-udp-rate); players behind one NAT share it. See UDP limits.

Is the server up? Start it with -http 127.0.0.1:36101 and open the status page on the host, or run re-psn-app check HOST:PORT from a player's machine.

Still stuck? Open an issue with the server's version (it is in the first log line), what you did and what you saw. Leave out addresses and tokens you do not want to share.

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