[public-1.15.0] Windows Dedicated Server – “Plat_IsWOW64” Entry Point Error

[in2002-tw]

Hi NMRiH Team,

After the recent NMRiH 1.15 update, I can no longer start the Windows Dedicated Server.

The server fails immediately on startup with the following error:

“The procedure entry point Plat_IsWOW64 could not be located in the dynamic link library ...\bin\steamclient.dll.”

I have already performed a completely clean installation of the Dedicated Server using SteamCMD:

app_update 317670 validate

This was installed into a new, empty directory with no Metamod, SourceMod, plugins, custom DLLs, or any files copied from my previous server installation.

The same error still occurs on this completely clean installation, so it does not appear to be caused by third-party plugins or old server files.

I also ran validate again and SteamCMD completed successfully, but the problem remains.

The versions included with the current AppID 317670 installation are:

bin\steamclient.dll — FileVersion 10.87.82.64
bin\tier0_s.dll — FileVersion 10.26.00.34
bin\vstdlib_s.dll — FileVersion 10.26.00.34

The error only started after the recent 1.15 update.

Could you please check whether the current Windows Dedicated Server build (AppID 317670) has the correct and matching Steam/Source runtime binaries?

It looks like there may be a version mismatch between steamclient.dll and the other Source Engine runtime binaries.

Environment:
Windows Dedicated Server
AppID: 317670
Clean SteamCMD installation
No Metamod / SourceMod / third-party plugins
Windows 11 64-bit

Thanks!

[BigHatMarley]

I can confirm that a friend who runs servers tried to update and they no longer run. I can't give much else but I can confirm there is a definitive issue.

This is what he sent me in relation to it.

Network: IP 203.23.178.4, mode MP, dedicated Yes, ports 29025 SV / 27005 CL

---

• Unable to load Steam support library.*
• This server will operate in LAN mode only.*

---

[cs16fastdlxdd]

You should be abel to fix this problem by installing steam on the machine. It is not enough to just have steamcmd. you also need steam. you do not need to login into steam, just have steam installed and the error will disappear.