Applies to: all products
For Clarett Thunderbolt, Saffire, or Red interfaces on macOS 10.13 or later, please see the following article in addition to the below steps: My interface isn't appearing on my Mac
On rare occasions, a Mac preference file relating to audio devices may become corrupted. This can cause a device to not show up as an input/output device in System Preferences > Sound even when there is nothing wrong with the device itself, or cause the device's MIDI ports to not show up. On these occasions, deleting a few preference files can sometimes fix the issue.
The first set of files to be deleted can be found by navigating to:
Mac HD > Library > Preferences > Audio
There should be two preference files in this folder:
com.apple.audio.DeviceSettings.plist
com.apple.audio.SystemSettings.plist
Any additional files in the Audio folder will likely be duplicates (which can often be the cause of the problem), you should delete these files as well.
The other preference file that can cause a similar problem is found in a different Library folder. See the instructions below, depending on the OS version your Mac is on.
Mac OSX 10.7 or later
On Mac OSX 10.7 or later go to:
Finder > click 'Go' at the top of the screen > Hold down the “Alt/Option” key and click on the Library folder > Preferences
Once there, delete the 'com.apple.audioMIDIsetup.plist' file.
There are three Library folders on a Mac, so if you can't see one of these files, it’s worth double-checking that you are navigating to the correct folder. After trashing these files, restart your computer.
These files will be re-generated by the operating system after you restart, this is perfectly normal.
Mac OSX 10.6 or earlier
On Mac OSX 10.6 or earlier the User Library folder is not hidden and so can be accessed by navigating to:
Mac HD > [your username] > Library > Preferences
Once there, delete the 'com.apple.audioMIDIsetup.plist' file.
On systems running OSX 10.10 Yosemite, the filename is lengthened to 'com.apple.audio.audioMIDIsetup.plist'.
There are three Library folders on a Mac, so if you can't see one of these files, it’s worth double-checking that you are navigating to the correct folder. After trashing these files, restart your computer.
These files will be re-generated by the operating system after you restart, this is perfectly normal.
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