I'm having the same issue as "Tibbe". When copying DB from from windows, it won't load (is ignored while a DB of the same name is created in the folder).

 

Testing:

Started a new game in Valheim Docker.  Made in-game changes. Closed game. Stopped Valheim Docker.

Copied DB from Unraid into Windows.

Loaded Copied DB in windows. Confirmed in-game changes remained. Made additional in-game changes. Closed game.

Copied DB from Windows back into Unraid. Started Valheim Docker. Started game & connected to server.

I am loaded into a new world. Closed game. Stopped Valheim Docker.

 

In the DB folder, there now exists two DB files with the same name (one larger than the other).

4 hours ago, jsooter1 said:

In the DB folder, there now exists two DB files with the same name (one larger than the other).

Please use the official support thread for this.

It is not possible that there are two files in the folder with the exact same name, maybe the name is spelled differently or it has a space in it or something like this.

 

@luckyy has written a good guide about the basics from Valheim over on the support thread:

 

@ich777I'm so glad you are keeping up here.  I only logged in today because you messaged me lol.  I've missed so many posts.

I dont know what i am doing wrong...
i have tried to set up the server with Valheim Plus for a day now without any luck. i allwas get stuck and get this error message "[S_API FAIL] Tried to access Steam interface SteamNetworkingUtils003 before SteamAPI_Init succeeded."

Settings i changed:
Network type: fixed ip (Custom: br0)

validate instalation == true

Servername

worldname

Public Server == 0

Valheim Plus == true

 

Edit: the hole log befor it stops:

---No optional script found, continuing---
---Starting...---
---Update SteamCMD---
Redirecting stderr to '/serverdata/serverfiles/Steam/logs/stderr.txt'
[ 0%] Checking for available updates...
[----] Verifying installation...
Steam Console Client (c) Valve Corporation - version 1639697740
-- type 'quit' to exit --
Loading Steam API...OK

Connecting anonymously to Steam Public...OK
Waiting for client config...OK
Waiting for user info...OK
---Update Server---
---Validating installation---
Redirecting stderr to '/serverdata/serverfiles/Steam/logs/stderr.txt'
[ 0%] Checking for available updates...
[----] Verifying installation...
Steam Console Client (c) Valve Corporation - version 1639697740
-- type 'quit' to exit --
Loading Steam API...OK

Connecting anonymously to Steam Public...OK
Waiting for client config...OK
Waiting for user info...OK
Update state (0x5) verifying install, progress: 0.39 (4194304 / 1086355123)
Update state (0x5) verifying install, progress: 22.01 (239074437 / 1086355123)
Update state (0x5) verifying install, progress: 56.77 (616678906 / 1086355123)
Update state (0x5) verifying install, progress: 89.11 (968075770 / 1086355123)
Success! App '896660' fully installed.
---Prepare Server---
---ValheimPlus enabled!---
---ValheimPlus Version Check---
---ValheimPlus v0.9.9 up-to-date---
---Server ready---
---Starting Backup daemon---
---Start Server---
---with Valheim Plus---
---Update Check for Valheim enabled, running automatically every 60 minutes.---
[S_API] SteamAPI_Init(): Loaded local 'steamclient.so' OK.
CAppInfoCacheReadFromDiskThread took 1 milliseconds to initialize
Setting breakpad minidump AppID = 892970
[S_API FAIL] Tried to access Steam interface SteamNetworkingUtils003 before SteamAPI_Init succeeded.

 

Edited January 17, 20224 yr by Rootsman

2 hours ago, Rootsman said:

I dont know what i am doing wrong...

Please use the support thread for the container (click on the Valheim icon on the Docker page and on Support), but from what I see you do nothing wrong.

 

2 hours ago, Rootsman said:

i have tried to set up the server with Valheim Plus for a day now without any luck. i allwas get stuck and get this error message "[S_API FAIL] Tried to access Steam interface SteamNetworkingUtils003 before SteamAPI_Init succeeded."

What is wrong with this message? Nothing to worry about.

 

2 hours ago, Rootsman said:

Network type: fixed ip (Custom: br0)

Do you need a static IP? I would recommend to use bridge mode but that won't prevent the connection to the container.

 

2 hours ago, Rootsman said:

validate instalation == true

Please don't set this to ture because this will always force a validiation from the game files and the start takes much longer than usual.

 

2 hours ago, Rootsman said:

Edit: the hole log befor it stops:

The log looks perfectly fine and the server is waiting for connections.

 

How did you try to connect or whats the issue?

Have you made sure that the password is at least 6 characters?

I have the server set up but when I try to join it, I get "Incompatible version" Logs state server is up to date. I'm trying to connect on my steam deck and from my windows laptop, both give the error.

---Server ready---
---Starting Backup daemon---
---Start Server---
---with Valheim Plus---
---Update Check for Valheim enabled, running automatically every 60 minutes.---
[S_API] SteamAPI_Init(): Loaded local 'steamclient.so' OK.
CAppInfoCacheReadFromDiskThread took 1 milliseconds to initialize
Setting breakpad minidump AppID = 892970
[S_API FAIL] Tried to access Steam interface SteamNetworkingUtils003 before SteamAPI_Init succeeded.
UPDATE CHECK: ---Nothing to do, Valheim up-to-date---

 

32 minutes ago, Lectoid said:

I have the server set up but when I try to join it, I get "Incompatible version" Logs state server is up to date. I'm trying to connect on my steam deck and from my windows laptop, both give the error.

You have enabled Valheim Plus from what I see from the log, make also sure that you've install Valheim Plus on your Client too (local Computer).

Well poop. I've been trying to get Valheim Plus added to my steam deck, but I can't find any instructions on the web. I don't play it on my laptop, but I installed it as a troubleshooting step. Thank you for the quick reply.

20 minutes ago, Lectoid said:

I've been trying to get Valheim Plus added to my steam deck, but I can't find any instructions on the web.

There you go: Click

 

BTW Nice that you got a Deck, wish also I could order one, but I'm still on the waiting list...

 

EDIT: Next time please post on the support thread from the container, I've only stumbled over this post by accident...

Those Linux steps don't work. I tried a similar method with another mod.

 

EDIT: Ok, it does work if I just run the "start_game_bepinex.sh" file in file explorer, but not when I add it in the launch options.

Edited June 1, 20224 yr by Lectoid

9 hours ago, Lectoid said:

Those Linux steps don't work. I tried a similar method with another mod.

Then I would recommend that you open up a Issue on GitHub in the above linked post that those instructions doesn‘t work on the Deck.

 

I can only tell you that those instructions work for me on Debian fine.

Any idea how to enable crossplay in this type of server?

 

I can't seem to find the config file that launches the game (start_server.sh isn't sprecific to my setup, so I know that's not what Unraid/Docker is using)

 

can I just ass -crossplay as a game parameter? 

 

thanks!

1 hour ago, ScottRTL said:

can I just ass -crossplay as a game parameter? 

Just like that:

On 7/26/2024 at 12:19 PM, ich777 said:

Just like that:

So when I add this to my Docker I can no longer join from my PC with the IP:Port. Do I need to now use a join code? If so, where do i find this, i don't see it in the logs

2 hours ago, Jonazune said:

Do I need to now use a join code?

You will then find it in the Server browser, but please be aware that you need to choose a unique name and that you possibly have to click refresh multiple times.

15 minutes ago, ich777 said:

You will then find it in the Server browser, but please be aware that you need to choose a unique name and that you possibly have to click refresh multiple times.

Thank you so much!

When i enable validation flag to true the docker gets the latest version of Valheim but it resets my server data. What is wrong?

On 11/21/2025 at 12:42 AM, TCMapes said:

When i enable validation flag to true the docker gets the latest version of Valheim but it resets my server data. What is wrong?

Sorry, I've overlooked your message.

Possibly the path mapping is not correct, please check what paths that you have set for the gamefiles in the template, if you have set /mnt/cache/appdata/... then you have to make sure that the appdata share stays on the cache and is not moved to the array, so to speak the Mover takes no action in the share settings <- I would say this is the preferred settings.

You can also change the path to /mnt/user/appdata/... which will most likely fix your issue but is not my preferred solution.

For the future, if you have any such issues please go to the support thread from the container by clicking on the container icon on the Docker page and click Support.

I'm having trouble finding where, and how, to upload my old world save fine to the server... I've tried creating a new folder called world, one called world_locan, tried putting the files in the world_local folder in savedate, the worlds_local in .config>unity3d>IronGate>Valheim>worlds_local. But no matter where I put them, the game just starts a new seed....

On 12/28/2025 at 8:55 PM, HaakonS said:

I'm having trouble finding where, and how, to upload my old world save fine to the server... I've tried creating a new folder called world, one called world_locan, tried putting the files in the world_local folder in savedate, the worlds_local in .config>unity3d>IronGate>Valheim>worlds_local. But no matter where I put them, the game just starts a new seed....

Sorry but this is very less information.

How did you configure the container, so to speak maybe post a screenshot from your template.

If you would like to restore a old world it would be best to start the container once like it is and after that stop it, delete the created world and copy the old world over <- as long as the world name is set correctly in the Docker template.

On 12/30/2025 at 3:57 PM, ich777 said:

Sorry but this is very less information.

How did you configure the container, so to speak maybe post a screenshot from your template.

If you would like to restore a old world it would be best to start the container once like it is and after that stop it, delete the created world and copy the old world over <- as long as the world name is set correctly in the Docker template.

I managed to get it up somehow, but I ran nto another problem. after the last update it went back to just creating a new world. and it hadn't taken any backups between december 30.th and January 8.th. I managed to restore a backup from December 29.th (all others where empty new worlds) even though we had played until probably a few days ago with no issue. I tried to enable debugmode to rebuild what we lost. It lets me enable devcommands, but not debug mode, saying it's "Not valid in the current context" even though I copy-pasted my steam ID into the admin list.... I tried reinstalling the server. Letting it start and create a new world, upload my world files, and copy the neames of the new world over to my old files and deleting the new one. But it now again just starts a new world.

Name: Valheim

Overview:

This Docker will download and install SteamCMD. It will also install Valheim and run it.

ATTENTION: First Startup can take very long since it downloads the gameserver files!

SERVER BROWSER: It could take really long that the server shows up in the in game server list, if you want to connect directly simply go to the Steam Server Browser - View -> Servers -> Favourites -> Add Server -> SERVERIP:SERVERPORT+1 (eg: if the server port is 2456 then you have to enter something like: 192.168.0.1:2457) -> click on Add -> click on more time on Refresh, after that you can connect to the server with a double click.

Update Notice: Simply restart the container if a newer version of the game is available.

You can also run multiple servers with only one SteamCMD directory!

Additional Requirements:

None Listed

Repository: ghcr.io/ich777/steamcmd:valheim

Network Type: Bridge

Use Tailscale:

Off

Console shell command:

Privileged:

Off

  SteamCMD: /mnt/user/appdata/steamcmd

Container Path: /serverdata/steamcmd

  ServerFiles: /mnt/cache/appdata/valheim

Container Path: /serverdata/serverfiles

  GAME_ID: 896660

Container Variable: GAME_ID The GAME_ID that the container downloads at startup. If you want to install a static or beta version of the game change the value to: '896660 -beta YOURBRANCH' (without quotes, replace YOURBRANCH with the branch or version you want to install).

  GAME_PARAMS:

Container Variable: GAME_PARAMS Enter your extra start up commands for the server here otherwise leave empty.

  Validate Installation:

Container Variable: VALIDATE Set the Variable to 'true' if you want to validate the installation otherwise leave it blank.

  Server Name: Free_Airport_Valheim_Server

Container Variable: SRV_NAME Name of the Server

  World Name: Free_Airport_Valheim_Server

Container Variable: WORLD_NAME Name of the Server World

  Server Password: *****

Container Variable: SRV_PWD Server Password - ATTENTION: the minimum length is 6 characters!

  Public Server: 1

Container Variable: PUBLIC List Server as Public (set to '0' to disable or set to '1' to enable).

  UDP - Game Port Range: 2456-2458

Container Port: 2456-2458 UDP Game Ports (If you need another port delete this Entry and create a new UDP port mapping with the corresponding port range | GAME_PORT +2 | also don't forget to click on show more and change the GAME_PORT)

  ValheimPlus:

Container Variable: ENABLE_VALHEIMPLUS If you want to enable ValheimPlus set this variable to 'true' (without quotes). For more help please refer to this site: https://github.com/nxPublic/ValheimPlus

  BepInEx for Valheim:

Container Variable: ENABLE_BEPINEX If you want to enable BepInEx for Valheim set this variable to 'true' (without quotes). For more help please refer to this site: https://valheim.thunderstore.io/package/denikson/BepInExPack_Valheim/

  Backup: true

Container Variable: BACKUP_FILES Set this value to 'true' (without quotes) to enable the automated backup function from the container, you find the Backups in '.../valheim/Backups/'. Set to 'false' (without quotes) to disable the backup function.

  Backup Interval (in minutes): 62

Container Variable: BACKUP_INTERVAL The backup interval in minutes (set to 62 minutes because the game automatically saves the database every 30 minutes) ATTENTION: The first backup will be triggered after the set interval in this variable after the start/restart of the container).

  Backups to keep: 24

Container Variable: BACKUP_TO_KEEPNumber of backups to keep (by default set to 24 to keep the last backups of the last 24 hours).

4 hours ago, HaakonS said:

  ServerFiles: /mnt/cache/appdata/valheim

This is probably your issue, make sure if you select /mnt/cache/appdata/... that your appdata stays on the cache and the mover takes no action.

You can change this path to /mnt/user/... but please be aware of that this is not the recommended way, I would strongly advise you so that appdata stays on the cache and is not moved to another pool.

2 hours ago, ich777 said:

This is probably your issue, make sure if you select /mnt/cache/appdata/... that your appdata stays on the cache and the mover takes no action.

You can change this path to /mnt/user/... but please be aware of that this is not the recommended way, I would strongly advise you so that appdata stays on the cache and is not moved to another pool.

How do I do it the way you sugest? How do I prevent the server from moving appdata to another pool?

14 minutes ago, HaakonS said:

How do I do it the way you sugest? How do I prevent the server from moving appdata to another pool?

Sorry but this is strictly speaking a question for the General Support subforums, but to answer your question, go to the share settings, click on appdata and make sure that the Mover takes no action.

If you have any further questions then please, as pointed out above, create a Post in the General Support subforums.

how to change the Server modifier

Is there anyone who can help me with how to change The Server modifier (-modifier raids less -modifier Portals casual -modifier Resources muchmore -modifier DeathPenalty veryeasy -modifier Combat easy )

I've played around a bit with the settings in GAME_PARAMS: but I cannot get it to work

Edited February 8Feb 8 by JackJuel