Xcode 10 – iOS simulator is not launching

After installing Xcode 10, especially when Xcode 9 is also installed, It has been observed that at times simulator fails to launch while running a project. Following steps can resolve the Issue

  • Clear derived data Xcode -> Preferences -> Location -> Derived data
  • Open edit schemes and make sure for Run an executable is selected. If the executable is set to None, as shown in the image below, the simulator will not launch.
  • Restart mac



A pat on the back !!