Preferences > I/O > MIDI input drop down list is empty
I tried https://musescore.org/en/handbook/3/note-input#midi-keyboard several times.
In my case : A cheap connextion cable with an interface and a USB connector, which worked well with my previous PC and MuseScore.
I have MIDI-OX installed > Keyboard and (Microsoft Windows 11) MIDI driver and cable are all working very well.
Searching for a solution on the Internet for hours now. It seems that many users encounter this issue.
Thanks for your answer.