I can't select a MIDI port in omniCLOCKUpdated 6 days ago

If the Output menu keeps returning to "select midi port", the port is already open somewhere else.

On Windows, the older MIDI driver lets only one program use a hardware port. The DAW has usually claimed it, so omniCLOCK cannot. Turn that port off in the DAW's MIDI settings, then choose it inside omniCLOCK.

If the DAW and omniCLOCK both have to reach the same instrument, create virtual ports with loopMIDI and merge them onto the hardware port with MIDI-OX.

Power the hardware on and connect it before you open the DAW session. A port that was offline when the session loaded will not come back until you reload the session.

More detail is in the omniCLOCK manual.