Upload World

Valheim Guide • Updated Oct 14, 2026

Valheim: Uploading Your World

Moving a world from your PC (Local) to a Dedicated Server allows your friends to play 24/7 without you being online. Before Valheim 1.0, the save was two files; in 1.0 it is a complete world folder. Upload the format your local save uses as one unit.

Not sure which world file is which? For a legacy save, drop your .fwl into the free Valheim World & Modpack Doctor. A 1.0 save is the complete folder containing the _main.<n>.fwl2 and matching data files. The tool reads legacy metadata in your browser (nothing is uploaded), so you can confirm the world before you touch the server.

1. The Save Format

Before 1.0, a world consists of Name.db and Name.fwl; upload both. In 1.0, upload the whole Name/ folder, including one complete matching _main.<n> generation and its .ok marker. Do not split the folder into individual files.

2. Cloud vs Local

If you use Steam Cloud, your saves are in a hidden specific userdata folder. If you move them to "Local" in-game, they appear in AppData.

3. Server Name

The server must be told exactly which world name to load. If the name doesn't match the file, it will generate a new empty world.

Step 1: Locate Your Local Files

Option A: Using "Move to Local" (Recommended)

Open Valheim on your PC.
Go to Manage Saves.
Select your world and click Move to Local.
Close the game.
Press Win + R and type: %userprofile%\AppData\LocalLow\IronGate\Valheim\worlds_local.
You should see either MyWorld.db and MyWorld.fwl (legacy), or a MyWorld/ folder containing the _main.<n>.fwl2, .db2, .chunks and .ok files (1.0).

Option B: Steam Cloud (Legacy)

Path: C:\Program Files (x86)\Steam\userdata\[YOUR_STEAM_ID]\892970\remote\worlds\.
Note: We strongly recommend moving to Local first to ensure you have the latest version.

Step 2: Upload to Server

Stop your Supercraft Server.
Open File Manager.
Open the Game Data section and its worlds_local folder. Over FTP it is Game Data/worlds_local, which is the easier way to upload a 1.0 world folder with all its chunk files.
For a 1.0 save, upload the complete MyWorld/ folder. For a legacy save, upload both MyWorld.db and MyWorld.fwl.

Step 3: Activate the World

Open the configuration tab in your panel.
Pick the world in the Map list. The list reads the server's worlds folder each time you open it, so a world you just uploaded, over FTP too, shows up there.
The name has to match the save exactly (case-sensitive, no extension).
Example: if the save is Vikings.db and Vikings.fwl, or a folder named Vikings, the world is Vikings.
Save and Restart.

Common Error: The game only loads a numbered _main set that has all four of its files (.fwl2, .db2, .chunks and .ok), so a set missing one is skipped and the server falls back to an older complete set, or to none. Let the local game finish saving, then upload the complete folder again. For a legacy save, a world with terrain but no buildings usually means the .db file failed to upload or is corrupt.

Share your saga. Host your Valheim server with Supercraft and easily swap between worlds using our dedicated game panel.

Launch a Valheim server with this setup

Pick a preset and your new server boots preconfigured - rates, rules and mods already dialed in. Change anything later in the panel.

Browse all Valheim recipes →

Valheim Crossplay: Passive Mobs

Crossplay preset with the passive-mobs world modifier: creatures do not aggro unprovoked. Great for mixed-ski…

Use this setup →

Valheim Crossplay: Scheduled Restarts

Crossplay-enabled server (Steam + Xbox/PC Game Pass) with a nightly restart window for stability. Use when yo…