Windows 10 - 2015 LTSB vs 2016 LTSB vs 2019 LTSC

Disable MMCSS service, when you do programs use their default audio settings, MMCSS is guessing what you need. Might need to split it from the audio services.
Read the blah blah blah on the services page.

 

Split-Audiosrv-and-MMCSS-Services. Might have to run elevated, use Power Run.

Code:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Audiosrv]
"DependOnService"=-


[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Audiosrv]
"DependOnService"=hex(7):41,00,75,00,64,00,69,00,6f,00,45,00,6e,00,64,00,70,00,\
  6f,00,69,00,6e,00,74,00,42,00,75,00,69,00,6c,00,64,00,65,00,72,00,00,00,52,\
  00,70,00,63,00,53,00,73,00,00,00,00,00


[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\MMCSS]
"Start"=dword:00000004

 

Well...there's something I had not tried. Will try it, thanks!

 

I work with audio and dont multitask when i do. My audio programs know how to schedule the audio, ms doesnt. I found it by bareboning services like a mad'un. Thats what comes from tinkering, you find s**t. And someone moaned about barebone services

 

They may be split already on 1809 and later, can remember.

 

Looking at it on 1903, I can't even find an MMCSS service in Services, but the registry 'Start' entry is there (think it was "2") and 'Audiosrv' was:

"DependOnService"=hex(7):41,00,75,00,64,00,69,00,6f,00,45,00,6e,00,64,00,70,00,\
6f,00,69,00,6e,00,74,00,42,00,75,00,69,00,6c,00,64,00,65,00,72,00,00,00,52,\
00,70,00,63,00,53,00,73,00,00,00,00,00

I am going to restore my image of LTSC 1809 and tinker with it there...will edit/update later with...whatever I find out.

 

Multimedia Class Scheduler Service. Check "Audiosrv" dependencies. Im rusty on ltsc. Check Audiosrv in the registry, you may see MMCSS there.

 

Both the registry entries you mentioned were there. I just don't see any of those things in the actual "Services" panel.
In the registry, I changed them to:

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Audiosrv]
"DependOnService"=-

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\MMCSS]
"Start"=dword:00000004

Result: No change. Still stuttering like a mofo on LTSC 1809, but not 1903. *throws hands in air*

EDIT: Ah, Audiosrv = "Windows Audio" in Services, and has no dependencies.

 

@Dude Guyman Oh well, everythings worth a try.

 

I got to feeling ambitious and reinstalled LTSB 1607 and this time had no problem with the updates (several new cumulatives have come out since last time). Might just get lucky and stay with that...assuming the sound works well with it, and I'm pretty sure it does/did.

 

Really there are no problem with cumulatives on a clean reinstall? Because when I reinstalled months ago, first downloaded cumulative 2016-07 (I believe) and next it takes a loooong time to process and install.
I will try clean installing 1607 in a time.

 

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Why? I disable it right away because I do not want it using any disk space, at all, ever. I use imaging software to make my backups. But, now that you mention it, after doing updates it always turns itself back on, but does not actually work (while disabled via gpedit) and I have to go turn it off again. Annoying as Hell.

 

You answered yourself: some updates use system restore to quickly recover from installation fails in early stages.
That's before you get the chance on using imaging software, so why not prevent behind the scenes update rollback and rollup loops?

 

Any update that does that, is broken and I don't want it.

 

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Great analysis and comparison, very useful thread. Thanks for the hard work!

 

So far, which one is the best to use, also, any guides to disable completely the Windows 10 LTSB 2015 telemetry?