Hi there!
I have issues with MIDI ports not being available in the system when the
Microsoft Windows 10 UAC2 driver is loaded (latest version 10.0.17025.1000 from
Windows 10 Insider Preview Build 17025.rs_prerelease.171020-1626).
Microsoft documentation at
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/usb-2-0-audio-drivers
<https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/usb-2-0-audio-drivers>
claims that the USB Audio Class 1 driver should be loaded for the MIDI
interface / function:
USB Audio 2.0 Devices with MIDI (subclass 0x03 above) will enumerate the MIDI
function as a separate multi-function device with usbaudio.sys (USB Audio 1.0
driver) loaded.
