I\'ve read every StackOverflow that I could find on this issue, but I still can\'t work it out.
I\'m trying to deploy an app to actual device (NOT emulator)
Seems like there are many issues causing the same error message.
This one worked for me Windows Phone deploy Issue
Essentially you need to remove/uninstall the device from Windows. Then after unplugging and plugging back in, the device and drivers are reinstalled.