Back Up, Migrate and Troubleshoot an Unturned Server
Archive the ServerID folder after Shutdown, restore it with the same launch argument, and separate a broken map from a hidden server.
The Unturned world is Servers/<ServerID>/, not the SteamCMD install. There is no autosave. Without Save or Shutdown, a copy can be older than the last thing a player did.
Creating the server is the GSLT guide. Settings files are the Commands.dat guide.
An archive you can open
Tell players, wait until they leave, run Save if you want a named point, then Shutdown. Wait until the process is gone. Copy the whole ServerID folder off the machine: Server/Commands.dat, the gameplay config, WorkshopDownloadConfig.json, admin lists, the level and the players. The studio keeps that tree under U3DS/Servers/.
Open the archive once. Keep the previous one. Write down the exact ServerID and whether the script says +InternetServer/ or +LanServer/.
app_update 1110390 reinstalls the U3DS application. It does not rebuild that folder.
Bring the same ServerID up somewhere else
- Install U3DS on the destination and start a throwaway server once so you can see where it writes. Stop it with
Shutdown. - Set that generated folder aside.
- Restore your copy under
Servers/, using the same name as the script argument.+InternetServer/MyServerreadsServers/MyServer. A script that still saysExampleloads a different world, often an empty one. - Do not change
Map, File_IDs andDifficultyin the same restart as the move. - Put the GSLT back. A token belongs to the Steam account that created it. Copying the string into a file does not register it on another account. The GSLT guide has the Steam page.
Start without deleting the source. Wait for Loading level: 100%. A player should recognize a container, a base or a vehicle. Shutdown, start again, and check that the same object is still there. Only then test from outside.
Three failures that look alike
| What you see | Where to look |
|---|---|
| A brand-new world | Wrong ServerID, or the Servers folder is not on the path ServerHelper reads. |
| Right map, missing bases | Incomplete copy. Restore the archive. Do not keep playing on it. |
| Server Code changes every boot | GSLT was not read. Commands.dat or Login_Token. |
| Missing from the list, reachable by code | Anonymous, still +LanServer, or neither Fake IP nor a forward. |
| Stuck downloading | File_IDs. Remove the last mod on a copy, not on the original. |
| Will not boot after OpenMod | Move OpenMod.Unturned out of Modules and confirm a vanilla start. |
Workshop detail is in the mods guide. An empty server list is not a reason to regenerate the map.
Back out
Leave the old machine off and intact for a few days. On failure, stop the destination, keep its console, restore the archive, and start again only after the ServerID in the script matches the folder. Hosts that expose that folder are on the Unturned comparison.
Questions
Does Save replace an off-machine copy?
Can I rename the ServerID during the move?
The SteamCMD update deleted the players.
Sources: Setting up a Server, Save and Shutdown, SteamCMD and ServerID, how to update the server.
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