No MIDI ports available in Live after upgrading the Mac OS

  • Live Versions: 1 - 9
  • Operating System: OS X

Symptom

  • MIDI hardware doesn't work anymore in Live after upgrading the Mac operating system or after using Apple's Migration Assistant.
  • In Live's Preferences → MIDI tab, no MIDI ports are listed.
  • Live may take a long time to launch.

Reason

A corrupt or incompatible MIDI driver.

Solution

  • Make sure Live isn't running.
  • Open the Audio MIDI Setup utility. It can be found under /Applications/Utilities/.
  • In the Audio MIDI Setup show the MIDI Window.
  • Click into the configuration chooser and select “New Configuration…”.
  • Close the Audio MIDI Setup.
  • Start Live again.

Audio-MIDI-Setup Lion

If this doesn't help or if the MIDI window does not open in the Audio MIDI utility, it might be necessary to remove all MIDI drivers from the system, for example when the error message "The MIDI Server can't be opened" appears

  • To do this, navigate to Macintosh HD/Library/Audio/MIDI Drivers and delete all midi drivers contained there
  • You can also find another method of how to complete this task on this external web site.
  • MIDI drivers can be re-installed afterwards.

Related: Live hangs while launching on OSX