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Incorrect group processing in CMidi2UMP2BSMidiTransform::SendMidiMessage could result in incorrect group assignment for messages

area-service-or-api 🖥️Related to the Windows Service, core API, abstractions, etc.Related to the Windows Service, core API, abstractions, etc.

bug 🐞Something isn't workingSomething isn't working

critical ‼️Critical to be fixed/implemented before next major releaseCritical to be fixed/implemented before next major release

Status: Open.

Bug

#829 In microsoft/MIDI;

· Psychlist1972 opened on Jan 19, 2026

[BUG]: NRPN/RPN messages do not account for different groups

area-service-or-api 🖥️Related to the Windows Service, core API, abstractions, etc.Related to the Windows Service, core API, abstractions, etc.

bug 🐞Something isn't workingSomething isn't working

Status: Open.

Bug

#822 In microsoft/MIDI;

· sat-okada opened on Jan 14, 2026

Removal of MIDI 2.0 device during discovery and protocol negotiation can result in a hang/crash

area-service-or-api 🖥️Related to the Windows Service, core API, abstractions, etc.Related to the Windows Service, core API, abstractions, etc.

Status: Open.

#819 In microsoft/MIDI;

· Psychlist1972 opened on Jan 13, 2026

[TODO] Implement a way to make a MIDI 2 device unavailable to clients until all discovery has been completed

area-service-or-api 🖥️Related to the Windows Service, core API, abstractions, etc.Related to the Windows Service, core API, abstractions, etc.

optimization ☄️Related to optimizing performance or other aspectsRelated to optimizing performance or other aspects

todo 🗃️Not really a bug just something we need to do that is useful to track in the open.Not really a bug just something we need to do that is useful to track in the open.

Status: Open.

#818 In microsoft/MIDI;

· Psychlist1972 opened on Jan 9, 2026

[BUG]: When Default MIDI 1.0 Port Naming is set to newer-style in MIDI Settings app, port names cannot be distinguished.

area-service-or-api 🖥️Related to the Windows Service, core API, abstractions, etc.Related to the Windows Service, core API, abstractions, etc.

bug 🐞Something isn't workingSomething isn't working

Status: Open.

Bug

#816 In microsoft/MIDI;

· sat-okada opened on Jan 7, 2026

Would it be feasible to add TSan, UBSan, and ASan support?

feature request 💡New feature request or proposalNew feature request or proposal

Status: Open.

#815 In microsoft/MIDI;

· clin1234 opened on Jan 3, 2026

[BUG]: Yamaha MONTAGE M in UMP MIDI2 Mode is detected as "MIDI 1.0 Byte Format"

by designWhat was reported is by designWhat was reported is by design

Status: Open.

Bug

#810 In microsoft/MIDI;

· JanneRoeper opened on Dec 10, 2025

[TODO]: PowerShell modules need .NET 10 compatible version of powershell

Status: Open.

#809 In microsoft/MIDI;

· Psychlist1972 opened on Dec 10, 2025

[DOCS]: page footer links to SDK Overview and Knowledge Base point to the wrong URLs

area-documentation 📄Related to the MIDI documentationRelated to the MIDI documentation

bug 🐞Something isn't workingSomething isn't working

Status: Open.

Bug

#808 In microsoft/MIDI;

· 13thsymphony opened on Dec 5, 2025

[BUG]: Settings app can unceremoniously close after first-run MIDI setup

area-user-tools ⚙️Related to the user-focused tools like SettingsRelated to the user-focused tools like Settings

Status: Open.

#805 In microsoft/MIDI;

· Psychlist1972 opened on Dec 5, 2025

[BUG]: No sample for using the MIDI Connection COM extensions

area-samples 🍦Related to the samplesRelated to the samples

Status: Open.

#804 In microsoft/MIDI;

· Psychlist1972 opened on Dec 5, 2025

[TODO]: Updated midifixreg to use CFR-compatible availability logic

area-sdk 🔧Related to the application SDKRelated to the application SDK

area-user-tools ⚙️Related to the user-focused tools like SettingsRelated to the user-focused tools like Settings

Status: Open.

Task

#800 In microsoft/MIDI;

· Psychlist1972 opened on Nov 8, 2025