
Now that you are aware of every potential culprit that might be responsible for this issue, here’s a list of methods that other Starbound games have used to fix this particular issue: 1. Situations like this can typically be resolved by using a VPN tunneling app like Hamachi when connecting to the game server.
Underlying Network Restriction – There are some instances where a network restriction (related to the IPv4 connection) imposed at an ISP level is preventing the connection with the Starbound server.
In this case, you can resolve the issue by whitelisting Starbound as well as the launcher you use to launch the game.
Starbound connection is blocked by a firewall – A false positive might convince your security suite to block incoming and outgoing connections with the Starbound server.
In this case, you can resolve the issue by triggering an integrity check from Steam’s menu.
Game file corruption – According to some affected users launching the game through Steam, you can also expect to see this error occurring in those instances where a game file or associated dependency is missing or corrupted. Starbound ports are not forwarded – If you’re using an older router model (one that doesn’t support UPnP), you will need to go through the trouble of forwarding the required ports manually from your router settings according to the platform you’re attempting to playing the game on.
This feature is essential in allowing you to connect to different Starnbound servers since it will automatically forward the ports used by the game.
UPnP is Disabled – If you’re using a newer router model, you can expect to see this error if you previously disabled Universal Plug and Play (UPnP).