Unable to contact local DTServiceHub to bless simulator connection

Question

When I run my basic Xcode project in simulator, I got the below issue:-

Failed to initiate service connection to simulator.

Unable to contact local DTServiceHub to bless simulator connection

Xcode 8.0

OS 10.11.6

SWIFT 3

Answer 1

I reset the Simulator by using the "Reset Content and Settings..." and quit my Xcode. Then opened my project again and ran, it worked for me. But I don't know why this error occurred.

Answer 2

In Xcode 9 there is Simulator > Hardware > Erase All Content and Settings