Windows 10: [19041] Audio Endpoint Builder removes custom MIDI drivers!

In the latest 2004 Slow ring build 19041, maybe also in 19033, the Audio Endpoint Builder service removes all custom MIDI drivers e. g. Coolsoft VirtualMidiSynth from the system and replaces them by the builtin library. Every time upon reboot I need to reinstall these drivers to get proper MIDI playback.


Process Monitor displays this clearly:


3:34:17.7288780 svchost.exe 2316 RegQueryValue HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32\midi1 SUCCESS Type: REG_SZ, Length: 42, Data: VirtualMIDISynth.dll
3:34:17.7332640 svchost.exe 2316 RegDeleteValue HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32\midi1 SUCCESS
3:34:17.7333624 svchost.exe 2316 RegDeleteValue HKLM\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Drivers32\midi1 SUCCESS
3:34:17.7372816 svchost.exe 2316 RegSetValue HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32\midi1 SUCCESS Type: REG_SZ, Length: 22, Data: wdmaud.drv
3:34:17.7373767 svchost.exe 2316 RegSetValue HKLM\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Drivers32\midi1 SUCCESS Type: REG_SZ, Length: 22, Data: wdmaud.drv

This did not happen in the regular 1909 build.

:)

 

No sound - windows audio and audio end point builder not running/installed

I have the same issue, and applied your suggestion to check he running services.

Windows Audio runs well.

But Windows Audio Endpoint Builder is not existing in the list of services.

How Windows Audio EndPoint Builder service can be installed?

Thank you !

 

Windows audio endpoint builder are not in my Pc

My audio system in My computer does not work, and My computer tell me that i need windows audio and Windows audio endpoint builder to run if the audio system gotta work. and i can see that windows audio is running, but i can not fin Windows audio endpoint
builder in the computer

So my question is, "where can i find or download Windows audio endpoint builder?

 

Windows Audio and Windows Audio endpoint Builder stop after Lock or Sleep

Hi Larry,

This issue may occur if the service is started by the Local System account instead of by the Local Service account (NT AUTHORITY\LocalService). The
Local System account may have insufficient permissions to start the service. For the
Windows Audio and Windows Audio Endpoint Builder services, follow the steps below:

• Set the service and any dependent services to run under the NT AUTHORITY\LocalService account.
• Click Start, type "Services.msc” in the
  Search programs and files box, and then press ENTER.
• Locate and double click the Windows Audio service.
• Click the Log On tab.
• In the This account text box, type “NT AUTHORITY\LocalService”.
  
• Set both Password fields blank.
• Click Apply and then OK.
• Repeat these steps for the Windows Audio Endpoint Builder service.
• Restart both services.

Let us know how it turns out.