Ever since the update to iOS 10.3, I have been unable to use my iPad Air with inter-device audio. It shows up in the device list in Audio MIDI setup, but when I click enable, it spins for a bit then disappears. It also disappears from Xcode at this point. It won't show up again until I unplug the lightning cable and plug it back in. Possibly related: I also have issues trying to create a new Audio or Screen recording of my iPad in QuickTime - it beachballs for a while then pops up saying "The operation could not be completed" and my device disappears from Audio MIDI Setup and Xcode.
I tested with another iPad Air and an iPhone 6S - the other iPad Air has the same issue but the iPhone works as expected.
Edit: Tested on an iPhone 5S and it has the same issue. The trend seems to be older devices have the issue but newer devices don't.
Has anyone had the same issue and have any suggestions on how to fix this?
