TI Multiplayer/Settings and Troubleshooting
From Terra Invicta Official Wiki
This page is part of the TI Multiplayer mod.
Settings
The settings of TI Multiplayer are in the Unity Mod Manager window (Ctrl + F10 in the game). They are stored in Mods\Enabled\TIMultiplayer\Settings.xml.
| Setting | Default | Effect |
|---|---|---|
| Player Name | Player | The name other players see. Set it before your first session. |
| Default Host IP / Default Port | 127.0.0.1 / 7777 | Pre-filled values for Direct Connect. |
| Use Steam Lobbies (when available) | on | Currently has no effect. |
| Verbose debug logging | on | Off = only warnings and errors are written to the log. |
| Transport | Auto (SDR preferred) | Auto uses the Steam relay and falls back to Direct UDP. Steam Datagram Relay only or Direct UDP only force one of them. |
| Notify on Steam when next turn is ready | on | Steam Rich Presence shows Sandbox - Turn N ready. |
| Auto-download save on reconnect | on | Only used after a host migration: a player whose copy is out of date downloads the current one. |
| Combat autosave (host) | on | Writes the Combat autosave slot before battles with players. |
| Min log level and Verbose categories | Info / all off | More detailed logs for bug reports (Network, State sync, Save, Turn barrier, Harmony patches, UI, Steam API, Test mode, Lobby). |
| Local Test Mode | off | For developers: runs several game instances on one PC. Leave it off. |
Log files
When something goes wrong, the log is the most important information for a bug report:
%USERPROFILE%\AppData\LocalLow\Pavonis Interactive\TerraInvicta\Player.log- the game log. The mod's lines start with[TIMultiplayer].- Attach the logs of everyone involved, and say which game version you play.
- Report bugs in the MOD BUG Multiplayer EA thread on the Pavonis Interactive Discord.
First steps when something is wrong
Most problems are fixed by a rejoin or a full restart of the game (host and the affected player):
- Make sure every player has the same mod version and the same game version.
- Let the affected player leave and rejoin.
- If that does not help, quit Terra Invicta completely and start it again.
- If a connection cannot be made at all, check firewall and router, and make sure Steam is running and online.
- If a player stays out of sync, the host can load the last autosave of the session.
Common messages
| Message | Meaning / what to do |
|---|---|
| Mod version mismatch. Host: a, You: b | Update the mod (Steam Workshop) so that everybody has the same version. |
| Terra Invicta version mismatch… | All players need the same game build. 1.0.53a and 1.0.53b are different builds. |
| Your loaded mods do not match the host's. | The message lists the mods that are missing or extra. Install the same multiplayer-aware mods in the same versions. |
| This campaign requires content you don't have: … | The scenario needs a DLC you do not own. |
| Your multiplayer mod build is too old for this host. | Update the mod on the Steam Workshop and rejoin. |
| Untested Game Version | Your game version is newer than the versions the mod was tested with. It may work. If it misbehaves, report it with your log. |
| Template Data Incomplete | Game files or the mod folder contain old or duplicate files. Verify the game files in Steam and remove leftovers from Mods/Enabled.
|
| That fleet is not synchronised with the host yet - the order was not issued. | Wait a moment and give the order again. |
| Army details are not available right now… | The host's latest update is still arriving. Try again in a moment. |
| Could not apply the host's update… / Still out of sync - requesting a full update… | The mod repairs this by itself. |
| Multiplayer - Sync Failed | Your game can no longer follow the host. Quit Terra Invicta completely, restart it, rejoin, and send your Player.log. |
| Connection is falling behind the host… | Your connection is slow. Battles and decisions arrive late until it catches up. |
| Failed to bind port 7777 (log) | Another program or game instance uses the port. Choose another port. |
Connection problems
- The lobby is not in the list: the host uses a different mod build, or Steam is not running.
- Direct UDP does not connect: the host must allow incoming UDP on the port (default 7777), or use the Steam relay instead. An unreachable host gives no error - the attempt simply times out after about 45 seconds.
- "Start as Host" in Direct Connect, but IP players cannot connect: with Transport: Auto and Steam running, the host still uses the Steam relay. Set Transport to Direct UDP only.
Linux / Proton
If Terra Invicta keeps closing right after start ("Closing Terra Invicta") after a Workshop update, quit the game, delete the mod's folder in Mods/Enabled, and start the game twice. The mod prevents this from happening again.
See also
| TI Multiplayer (mod) | |
|---|---|
| Getting started | Hosting and Joining • Settings and Troubleshooting • Mod Compatibility |
| Sandbox campaign | Time and Decisions • Saves and Sessions • Co-op • Combat • Diplomacy and Chat |
| Other modes | Skirmish |
| Related | Mods • TI Fleet Manager • TI Space Nations |


