Startup Issue with Valheim - After Amp Manager Update Valheim Server will Not Start

System Information

Field Value
Operating System Windows - Windows 11 Pro on x86_64
Product AMP ‘Decadeus’ v2.4.6.6 (Mainline)
Virtualization None
Application Valheim
Module GenericModule
Running in Container No
Current State PreStart

Problem Description


Updated AMP to most recent version about 3 to 4 hours ago. Restarted instances all of my other instances came right back up. Valheim instance however did not. Seems stuck at “Application State: Preparing to start” I can stop the instance but other than that I have no real “control buttons” (Restart/start/update) I have View Connection Details and Assistance buttons.

Reproduction Steps

  • Stop all instances.
  • Update AMP manager to latest Build 4.6.6
  • Reboot entire machine

Known issue with Windows after the update, just need to wait for Mike to take a look at it. Here’s the GitHub issue where it’s been reported:

Yikes Thanks for the tip. I will have to let my Discord know the Valheim and CS2 servers will be down til this is fixed!

Fixed in the patch that just dropped.

Got some controls back but now running into another issue: Error Code 2147483645. Amp state 3.

to add some info and troubleshooting me and my friend are trying: (trying to test what elese went wrong.)

Start new instance
Wait for installation to be finished and start server
Allow it to load and generate world.
Stop server
Enable BepInEx
Update server
Start once its complete.
Server crashes with “ERROR: SymGetSymFromAddr64, GetLastError: ‘Attempt to access invalid address.’ (Address: 00007FFB3555D783)”
AMPLOG shows the following “The file ‘C:/AMPDatastore/Instances/valtest0301/Valheim/896660/valheim_server_Data/sharedassets0.assets’ is corrupted!”

Also I was made aware Valheim and Bepinex updated today not sure if that plays into this yet.

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