A build only device cannot be used to run this target

Question

I get this error when I trying to test an app.

A build only device cannot be used to run this target.

No supported iOS devices are available

Answer 1

With XCode 8.3.2 I had this error message after I tried to run the app on a locked device. I unlocked and reattached as requested but the "A build only device cannot be used to run this target." message appeared.

I simply changed the target to a simulator and changed it back - it resolved my issue.