[Zubersoft]

I have tested the MIDI functionality with a Yamaha S90ES and a KORG micro-AIR. Both work just fine for me with the Windows 10 version. I do not have a large KORG keyboard to test with such as the pa2x or pa4x. You are the second user to indicate that they are now encountering issues with MIDI and KORG keyboards even though I didn't change anything except updating some libraries from Microsoft. There are newer versions of those libraries, but when I used them, it caused some users to be unable to install or run MobileSheets. If you are willing to test a build of MobileSheets that uses the updated libraries from Microsoft, we can see if it works properly for you. Send me an email at mike@zubersoft.com if you are willing to test this. Otherwise I will have no idea what to change to address this problem.

Thanks,
Mike

EDIT:
Not sure if this is relevant: https://support.korguser.net/hc/en-us/ar...indows-10-

Do you have the latest drivers? Also, do you have Windows 10 version 1809?