Hi,
maybe it's just as simple that you have to set the software properties to send i.e.
via MPU401 or whatever mididriver you have installed.

Also this can be selected in Windows sound properties if driver are installed.

Happy playing
GJ
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Cheers 🥂
GJ
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"Success is not counted by how high you have climbed
but by how many you brought with you." (Wil Rose)