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[BUG]: Inter-application MIDI no longer received after receiving app is closed and reopened a few times

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

area-winmmwmdaud2.drv or other WinMM issuewmdaud2.drv or other WinMM issue

bug 🐞Something isn't workingSomething isn't working

needs-investigation 🔍Needs to be investigated before considering or solving.Needs to be investigated before considering or solving.

Status: Open.

Bug

#968 In microsoft/MIDI;

· SimonORorke opened on Apr 4, 2026

[TODO]: Put in a confirmation prompt when deleting loopback ports in MIDI Settings

feature Approved feature on the official backlogApproved feature on the official backlog

fixed-awaiting-public-release 🕙Fixed in our internal builds. Waiting to make its way to a public release.Fixed in our internal builds. Waiting to make its way to a public release.

fixed-sdk-rc4

Status: Open.

Task

#964 In microsoft/MIDI;

· Psychlist1972 opened on Apr 3, 2026

[BUG]: Set Service to Auto-Start in global settings in MIDI Settings app does nothing

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

fixed-awaiting-public-release 🕙Fixed in our internal builds. Waiting to make its way to a public release.Fixed in our internal builds. Waiting to make its way to a public release.

fixed-sdk-rc4

Status: Open.

Bug

#963 In microsoft/MIDI;

· Psychlist1972 opened on Apr 3, 2026

[By Design]: Older Hercules devices using DirectMusic drivers do not work with Windows MIDI Services

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

Status: Open.

#962 In microsoft/MIDI;

· Psychlist1972 opened on Apr 2, 2026

[NAME_BUG]: New-style port names are not quite correct and don't match macOS in cases

bug 🐞Something isn't workingSomething isn't working

Status: Open.

Bug

#961 In microsoft/MIDI;

· Psychlist1972 opened on Apr 1, 2026

[BUG]: Native Instruments S61 MK2 has flashing display under new MIDI Services

needs-investigation 🔍Needs to be investigated before considering or solving.Needs to be investigated before considering or solving.

Status: Open.

Bug

#956 In microsoft/MIDI;

· Psychlist1972 opened on Mar 29, 2026

Vendored libmidi2 (AM_MIDI2.0Lib) copy appears to be out of sync with upstream

Status: Open.

#955 In microsoft/MIDI;

· sauloverissimo opened on Mar 29, 2026

[BUG]: WinRT MIDI 1.0 messages from same driver packet have different timestamps

app-compat 😵

area-windows-internal 🪟Related to internal (not in the repo) WindowsRelated to internal (not in the repo) Windows

fixed-awaiting-public-release 🕙Fixed in our internal builds. Waiting to make its way to a public release.Fixed in our internal builds. Waiting to make its way to a public release.

fixed-windows-release-may2026

Status: Open.

Bug

#953 In microsoft/MIDI;

· Psychlist1972 opened on Mar 28, 2026

[BUG]: SDK EndpointDeviceInformation logic doesn't always pull in the correct parent Ids

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

Status: Open.

Bug

#952 In microsoft/MIDI;

· Psychlist1972 opened on Mar 28, 2026

[BUG]: m-audio driver crashing service (was Windows 11 MIDI devices duplicating and causing DAW freezes)

bug 🐞Something isn't workingSomething isn't working

duplicate 🍭🍭This issue or pull request already existsThis issue or pull request already exists

external-caused-break 🛸A break caused by external tools or driversA break caused by external tools or drivers

fixed-awaiting-public-release 🕙Fixed in our internal builds. Waiting to make its way to a public release.Fixed in our internal builds. Waiting to make its way to a public release.

fixed-windows-release-may2026

Status: Open.

Bug

#950 In microsoft/MIDI;

· rpanwar4580-commits opened on Mar 26, 2026

[TODO]: Provide SDK debug binaries and associated source and symbols for developers

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.

Task

#949 In microsoft/MIDI;

· PeteBrown-MSFT opened on Mar 25, 2026

[BUG]: SDK MidiMessageConverter seems to lose group index

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

fixed-awaiting-public-release 🕙Fixed in our internal builds. Waiting to make its way to a public release.Fixed in our internal builds. Waiting to make its way to a public release.

fixed-sdk-rc4

Status: Open.

Bug

#947 In microsoft/MIDI;

· PeteBrown-MSFT opened on Mar 25, 2026