Valheim Crossplay Server Local IP Not Working? Use a Supported Connection Method

Valheim dedicated servers using the crossplay backend cannot be joined through a local or loopback IP address. Use the server's join code, public IP address and port, or an entry in the in-game server list instead.

Check the server backend

The -crossplay startup argument enables the PlayFab crossplay backend. Without that argument, the dedicated server uses the Steam backend, which only Steam users can see and join.

Keep -crossplay when non-Steam players need access. If every player uses Steam and local-IP access is required, omit -crossplay to use the Steam backend.

Connect to a crossplay server

A crossplay server can be joined through:

• Its join code
• Its public IP address and port
• The in-game server list

Local and loopback IP addresses are not supported by the crossplay backend.

When the dedicated-server console displays Game server connected, the server is running and ready to accept connections.

Port forwarding

The crossplay backend sends data through a relay and does not require router port forwarding to be accessible from outside the local network.

The Steam backend has different requirements. Its port range must be accessible from the internet for remote connections. Valheim uses the configured port and the following port; the default range is UDP ports 2456-2457.

Configure a Steam LAN server

For a LAN server used only by Steam players, omit -crossplay and set -public 0. The -public 0 option hides the server from the public browser and makes it joinable through the Join IP function, including through the server's local IP address.