Custom Audio Endpoint Enumerator DLL has a WSAEACCES error connecting to a socket on Windows Server 2022

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Custom Audio Endpoint Enumerator DLL has a WSAEACCES error connecting to a socket on Windows Server 2022

Anonymous

Hi All,

I have a Custom Audio Endpoint Enumerator DLL that works fine on Windows Server 2019. Audiodg.exe loads the DLL, which uses a socket to send the audio stream to a remote service to play the audio. However, on Windows Server 2022 when Audiodg.exe loads my Custom Audio Endpoint Enumerator DLL there seems to be an issue on that platform that is prohibiting the DLL from connecting to the socket, which returns a WSAEACCES error. Moreover, when the DLL is loaded by another application then the socket connect succeeds. The socket connection only fails when the DLL is loaded by Audiodg.exe.

I understand that Windows Server 2022 has a large focus on tightening security. Could this be the reason why the socket connection is failing when
the DLL is loaded by audiodg.exe on Server 2022 and works fine on Server 2019? Is there perhaps a policy that can be configured on Windows Server 2022 to fix this? Any advice would be appreciated.

BTW,

Thanks in Advance!

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Answer 1

Limitless Technology 45,231

Hello

Thank you for your question and reaching out. I can understand you are having issues related to connecting WSAEACCES in Windows server 2022.

Please specify your problem or provide further information to emphasize exactly what you require. It's difficult to determine what you're asking from the way it's worded now.

On the other note , yes there are lots of improvement in Security in Windows 2022 and 11.

As a General troubleshooting Guide.

Disable any Antivirus program or Windows firewall you may have for temporary purpose.
Please Debug what is exact error or exception using your Programming tools or Editor like Visual studio.
If the custom application in not developed by you then try to Contact application vendor to provide latest version of this application.

--If the reply is helpful, please Upvote and Accept as answer--

Anonymous

2022-05-31T14:25:02.883+00:00

Hi, thanks for the response. I have the 3 options you mention including that the code is developed in house. The debugger (Visual Studio and WinDbg) shows that the socket connect() returns an error and WSAGetLastError() returns the WSAEACCES error code. As mentioned before on Windows Server 2022 when a test executable loads the endpoint DLL in which the connect happens then the connect is successful. In Windows Server 2019 when audiodg.exe loads the dll the connect is successful and the audio stream is sent. However, on Windows Server 2022 when audiodg.exe loads the DLL the connect fails with WSAEACCESS. I suspect that on Windows Server 2022 Security updates in the OS is preventing executables like audiodg from making socket calls via third party DLLs. I am hoping that there is a remedy for this like a policy entry or signed certificate property change. I have searched the internet for any information about the updates to Windows Server 2022 and what was changed since Windows Server 2019 to cause this but there is nothing out there. Any help here is welcome!
Anonymous

2023-04-07T13:08:17.8166667+00:00

Hi, Audiodg.exe is running as LocalServce. On Windows Server 2022 when my dll handles IAudioOutputEndpointRT::ReleaseOutputDataPointer to send the audio data via a socket I get the WSAEACCES error. This problem does not happen on Windows Server 2019. On Windows Server 2022 a service like Audiodg.exe running as localService cannot access the network like it could on Windows 2019. How can I resolve this?
Thanks

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Custom Audio Endpoint Enumerator DLL has a WSAEACCES error connecting to a socket on Windows Server 2022

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