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Windows MIDI Services is rolling out via phased deployment through February 2026. Several known issues affect third-party dynamic port creation tools (loopMIDI, Bome) and WinMM MIDI 1.0 API apps. Workarounds include restarting the MIDI service after creating ports, using built-in loopback endpoints, or ensuring devices are connected before launching apps. A checker tool is available to verify if the new stack is enabled on your system. VirtualDJ controller communication issues are under active investigation.

Windows MIDI Services rollout

Bug: Dynamic ports (loopMIDI, loopBE, Bome, virtualTE) are not always visible.

Bug: Apps using the WinMM MIDI 1.0 API may not see newly plugged-in devices.

Bug: Apps using the WinMM MIDI 1.0 API may crash if you disconnect or power down a plugged-in device

Bug: VirtualDJ Not able to communicate with controller