iOS: Watch Kit paired device unavailable for development

I can't run my Apple Watch application in XCode. My phone+watch is listed as a "Unavailable Device" and says "paired device unavailable for development". When I try to launch the app it says the same thing.

How can I resolve this?

I'm using XCode 7.1, iOS 9.0, WatchOS 2.0.1.

This is what worked for me, and it is a lot easier and faster than un-pairing so I would try this first. From the Clock Face Swipe up, and click on the Ping iPhone button. After it makes a sound, go back in Xcode it should change no longer be unpaired or unavailable for development.

I had the same issue on iOS 9.1 + WatchOS 2.01 that XCode 7.1 kept saying "paired device not available for development". Here is what I did to solve it finally, not quite sure which step is critical -

1. Unpair my watch
2. Reboot both iPhone and apple watch
3. Pair them again, and setup my watch as a new one
4. Plug (unplug first) iPhone to Mac
5. On apple watch, say Trust the computer when it asks
6. Unplug and plug again

Bang! My apple watch is well recognized for development. Hope it helps.

I can confirm having this too by using the following configuration: OS X, Xcode7.2 beta, iPhone5s with iOS9.2 and WatchOS 2.1

I unplugged the iphone again, closed and restarted Xcode and plugged in the iPhone again - than it worked fine!

Rebooting the Apple Watch worked for me, after that it displays the 'trust this computer' message which is required to debug the watch with XCODE.

I just restart the Xcode to solve the problem.