[BUG]: Sonic Core / Creamware (software-defined?) MIDI ports not enumerated

[bosone666]

Windows Version

26200.7840

Service Installation Method

In-box In Insider Build

SDK version, if appropriate

No response

Location

Other or Unsure (please indicate in additional notes section below)

Type of bug

Cannot receive messages from MIDI 1.0 device

Steps to reproduce

my sonic core / creamware soundcard midi drivers disappeared and I cannot communicate via MIDI with my soundcard anymore
I uploaded some relevant screenshot here:

https://docs.google.com/document/d/1hwtmkFGhUmuGBfIRIbYeK9tt7QzbhZxl/edit?usp=sharing&ouid=111309476163639876187&rtpof=true&sd=true

Expected behavior

I need to see my soundcard MIDI ports!

Scope windows 11 no MIDI IN-OUT.docx

Additional notes

No response

[Psychlist1972]

Google docs can go away over time (deleted etc.), so pasting your content in here

---

Windows 11 Home
25H2
‎29/‎01/‎2026
26200.7840
Windows funcionalities 1000.26100.291.0

[Psychlist1972]

This looks related to the loopMIDI issue where drivers that dynamically add ports after startup do not enumerate properly.

The same workaround (restart the service) should work here
https://devblogs.microsoft.com/windows-music-dev/windows-midi-services-rollout-known-issues-and-workarounds/

With MIDI-using apps like MIDI-OX closed, please try restarting the service after the sonic core stuff comes online, and then let me know here if that works. Thanks.

[Psychlist1972]

Possibly related #835

[bosone666]

thanks for the reply! :)

This looks related to the loopMIDI issue where drivers that dynamically add ports after startup do not enumerate properly.

The same workaround (restart the service) should work here https://devblogs.microsoft.com/windows-music-dev/windows-midi-services-rollout-known-issues-and-workarounds/

With MIDI-using apps like MIDI-OX closed, please try restarting the service after the sonic core stuff comes online, and then let me know here if that works. Thanks.

I killed the midisrv.exe process after "ctrl-alt-canc", closed midiox and Scope and everything worked fine after this

I tried to disable the midisrv service from windows startup but, without this service, nothing works.

will keep you informed about other tests

[Psychlist1972]

Thanks. Just saw this on KVR and VI Control as well. You may want to update any other places you've posted that I haven't caught so others don't spend time trying to troubleshoot.

This is the same issue as with loopMIDI. When we have a proper fix out, I'll update here so you can try out a preview of it if you would like.

Pete