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[BUG]Sending messages from MME MIDI app to midi monitor causes Green Screen on the USB MIDI 2.0 driver and loopback device #435

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@Sho-KDM

Description

Describe the bug
Sending messages from MME MIDI app to midi monitor causes Green Screen on the USB MIDI 2.0 driver and loopback device
This issue only occurs if the device is running with the USB MIDI 2.0 driver (UsbMidi2.sys) and loopback device (e.g. ProtoZOA)

To Reproduce

  1. Load the attached firmware to the ProtoZOA.
  2. Make sure the USB MIDI 2.0 driver (UsbMidi2.sys) is loaded.
  3. Open midi.exe and monitor the ProtoZOA.
  4. Open the Pocket MIDI 64bit(MME MIDI app) and choose MidiSrv enumerated ports for Output.
    Output: ZOA-104 (iIF AC) O-1
    Image
  5. From the "Views" menu, open "System Exclusive" window.
  6. In the System Exclusive window, open the attached test data set, then, System Exclusive window shows sending data.
    Image
    Image
    Image
  7. Click "Transmit" to send messages.
    Image
  8. In the few seconds after starting data transmission, then Green Screen occurs.

Green screen shows "SYSTEM_THREAD_EXCEPTION_NOT_HANDLED".

Expected behavior
No Green Screen.

Installer Name or Version
Windows.MIDI.Services.In-Box.Service.-.1.0.1-preview.7.24305.1438-x64.exe

Desktop (please complete the following information):

  • OS: Windows 11 24H2 build 26120.2222 (Insider Dev channel)

Device information, if this is with an external MIDI device:

  • ProtoZOA running with the attached firmware.
    UUT_ZOA_104.zip

  • USB MIDI 2.0 class driver (USBMIDI2_10.0.1.7.x64.zip)

Application Information
MORSON Pocket MIDI (64bit MME MIDI app)
https://www.morson.jp/pocketmidi-webpage/

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area-usb-driver 💻Related to the USB MIDI 2.0 driverbug 🐞Something isn't workingcritical ‼️Critical to be fixed/implemented before next major releaseneeds-investigation 🔍Needs to be investigated before considering or solving.

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