Valheim server in restart loop since latest update?

Increasing numbers of users have been reporting that since the latest Valheim server version release their servers have been crashing and restarting over and over again, making the server unplayable.

The latest version of Valheim's server may require more RAM than previously expected. This appears to be down to the new world saving mechanism. Consider increasing the amount of RAM on your server.

Here is a quick summary of the issue as displayed on the command line:


    ERROR: Shader Unlit/Color shader is not supported on this GPU (none of subshaders/fallbacks are suitable)

ERROR: Shader Lux Lit Particles/ Bumped shader is not supported on this GPU (none of subshaders/fallbacks are suitable)

Shader 'Lux Lit Particles/ Tess Bumped': fallback shader 'Lux Lit Particles/ Bumped Smoke' not found

WARNING: Shader Unsupported: 'Lux Lit Particles/ Tess Bumped' - All subshaders removed

WARNING: Shader Did you use #pragma only_renderers and omit this platform?

WARNING: Shader If subshaders removal was intentional, you may have forgotten turning Fallback off?

ERROR: Shader Lux Lit Particles/ Tess Bumped shader is not supported on this GPU (none of subshaders/fallbacks are suitable)

WARNING: Shader Unsupported: 'Lux Lit Particles/ Tess Bumped' - All subshaders removed

WARNING: Shader Did you use #pragma only_renderers and omit this platform?

WARNING: Shader If subshaders removal was intentional, you may have forgotten turning Fallback off?

Unloading 5 Unused Serialized files (Serialized files now loaded: 0)
UnloadTime: 4.122397 ms

Only custom filters can be played. Please add a custom filter or an audioclip to the audiosource (Amb_MainMenu).

HDR Render Texture not supported, disabling HDR on reflection probe.

12/12/2022 09:57:17: Setting -savedir to: /crate

12/12/2022 09:57:17: Get create world world

12/12/2022 09:57:17: Using environment steamid 892970

12/12/2022 09:57:17: Using steam APPID:892970

[S_API] SteamAPI_Init(): Loaded local 'steamclient.so' OK.

CAppInfoCacheReadFromDiskThread took 0 milliseconds to initialize

Setting breakpad minidump AppID = 892970

[S_API FAIL] Tried to access Steam interface SteamNetworkingUtils003 before SteamAPI_Init succeeded.

12/12/2022 09:57:17: Server ID 90071992547409920

12/12/2022 09:57:17: Authentication:k_ESteamNetworkingAvailability_Waiting

12/12/2022 09:57:17: Steam game server initialized

12/12/2022 09:57:17: Using default prefs

12/12/2022 09:57:17: Valheim version:0.212.7

12/12/2022 09:57:17: Worldgenerator version setup:2

12/12/2022 09:57:17: Render threading mode:SingleThreaded

12/12/2022 09:57:17: Missing audio clip in music respawn

12/12/2022 09:57:17: Builder started

12/12/2022 09:57:18: Loaded localization CSV:localization language:English

12/12/2022 09:57:18: Loaded localization CSV:localization_extra language:English

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty.so

Fallback handler could not load library /crate/valheim_server_Data/Mono/party

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty.so

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty.so

Fallback handler could not load library /crate/valheim_server_Data/Mono/party

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty.so

Fallback handler could not load library /crate/valheim_server_Data/Mono/libparty

DllNotFoundException: party
  at (wrapper managed-to-native) PartyCSharpSDK.Interop.PFPInterop.PartyInitialize(byte[],PartyCSharpSDK.Interop.PARTY_HANDLE&)

  at PartyCSharpSDK.SDK.PartyInitialize (System.String titleId, PartyCSharpSDK.PARTY_HANDLE& handle) [0x00006] in :0 
  at PlayFab.Party.PlayFabMultiplayerManager.InitializeImpl () [0x000be] in :0 
  at PlayFab.Party.PlayFabMultiplayerManager._Initialize () [0x0000a] in :0 
  at PlayFab.Party.PlayFabMultiplayerManager.Start () [0x00000] in :0 


The shader Hidden/Dof/DepthOfFieldHdr (UnityEngine.Shader) on effect Main Camera (UnityStandardAssets.ImageEffects.DepthOfField) is not supported on this platform!

The image effect Main Camera (UnityStandardAssets.ImageEffects.DepthOfField) has been disabled as it's not supported on the current platform.

The shader Hidden/SunShaftsComposite (UnityEngine.Shader) on effect Main Camera (UnityStandardAssets.ImageEffects.SunShafts) is not supported on this platform!

The shader Hidden/SimpleClear (UnityEngine.Shader) on effect Main Camera (UnityStandardAssets.ImageEffects.SunShafts) is not supported on this platform!

The image effect Main Camera (UnityStandardAssets.ImageEffects.SunShafts) has been disabled as it's not supported on the current platform.

12/12/2022 09:57:18: Starting music menu

12/12/2022 09:57:18: UI Group status changed Menu = True



Unloading 19 unused Assets to reduce memory usage. Loaded Objects now: 135759.

Total: 59.123783 ms (FindLiveObjects: 4.024764 ms CreateObjectMapping: 13.138006 ms MarkObjects: 41.792267 ms  DeleteObjects: 0.168295 ms)


Unloading 6 Unused Serialized files (Serialized files now loaded: 0)

UnloadTime: 11.291265 ms

HDR Render Texture not supported, disabling HDR on reflection probe.

HDR Render Texture not supported, disabling HDR on reflection probe.

12/12/2022 09:57:18: Using default prefs

12/12/2022 09:57:18: isModded: False

12/12/2022 09:57:18: Zonesystem Awake 613

12/12/2022 09:57:18: DungeonDB Awake 613

12/12/2022 09:57:18: Registering lobby

12/12/2022 09:57:18: Worldgenerator version setup:1

12/12/2022 09:57:20: Audioman already exist, destroying self


Unloading 100 unused Assets to reduce memory usage. Loaded Objects now: 140265.

Total: 73.895162 ms (FindLiveObjects: 3.837003 ms CreateObjectMapping: 11.638646 ms MarkObjects: 57.572926 ms  DeleteObjects: 0.846076 ms)

In response to this issue we have been allocating extra RAM to Valheim servers reporting this issue, and will continue to do so free of charge for all existing servers.

If your server is experiencing this issue please contact our team in Discord and we'll be happy to assist.