OS Name/Version: Windows Server 2025 24H2 26100.7462
Product Name/Version: AMP Release “Phobos” v2.6.4.2, built 10/12/2025 02:35
Problem Description:
I created a Sons of the Forest dedicated server via AMP, but I am unable to connect to it. I have tested other game servers on the same setup, and they work correctly, which indicates that the issue is specific to this server.
During troubleshooting, I investigated with guidance from ChatGPT and discovered that the steam_appid.txt file appears to list the client AppID instead of the server AppID. This seems to be preventing connections, and even direct attempts to connect to the server fail.
Additionally, the server logs display repeated Steam-related assertion failures:
src\clientdll\steamengine.cpp (3529) : Assertion Failed: Attempt to call interface with invalid hSteamUser
src\common\interfacemap.cpp (874) : Assertion Failed: IPC call to IClientHTTP::ReleaseHTTPRequest returned failure code 12
These errors reference AppID 1326470 and occur during headless server initialization. The server runs in headless/dedicated mode without the full Steam client GUI. Despite the errors, the server starts, but the logs are filled with these assertion messages.
Goal / Request from AMP support:
-
Confirm whether these Steam assertion errors are expected in headless mode.
-
Advise on the correct configuration or fix for the
steam_appid.txtfile so that the server runs with the proper AppID. -
Ensure the server is fully compatible with Steam functionality to allow client connections.
Steps to reproduce:
- I have reinstalled the server multiple times and the issue keeps happening wiht sons of the forst specificly.
Actions taken to resolve so far: Tried manually changing the AppId but when starting the server, the config get changed back and restarts.
The server only lists on LAN regardless of the settings in AMP, the network test option fails becuase the AppId for Sons of the forest in AMP is incorrect. Kindly confirm or assist with installation.