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Allowing MOTU drivers in macOS Mojave


As of macOS High Sierra, Apple has introduced a new security measure. The system extensions for all newly-installed third-party software will automatically be blocked from running. If your MOTU interface is not showing up in Audio MIDI Setup, MOTU Audio Setup, the MOTU Discovery App, or your DAW on High Sierra or Mojave, you might need to allow the driver in your System Preferences.

To enable the MOTU drivers, follow these steps:

  1. Download and install the very latest installer for your MOTU interface.
  2. After restarting, open System Preferences.
  3. Select Security & Privacy.
  4. In the General section, click the Allow button.

System Prefs Mojave

Notes
  • The Allow button will disappear 30 minutes after installation. To display the Allow button, run the installer for the MOTU driver again.
  • This behavior will only occur when installing a MOTU driver on High Sierra for the first time. If you have installed the driver on a earlier version of macOS and then upgrade to 10.13, you should not need to enable the driver.
  • This issue is not specific to MOTU. It is a general change introduced in High Sierra and will affect any third-party (i.e. non-Apple) kernel extensions.