OK, this is the last bit, so follow these final steps:

1. Click on Build Settings in Unity:

2. Make sure that Unity C# Projects has a check mark in it; everything else should have everything pre-setup appropriately:

3. Click on Build:

4. It will ask you for the folder you want to build to; create a new folder called App, and select it:

5. It will take a quite a few minutes to finish building, so be prepared for a wait:

6. Once complete, the folder should auto open; select the App folder, to have a look at it:

7. Click on the Chapter8.sln file to open it in Visual Studio:

8. Change from Debug to Release:

9. Change from ARM architecture to x64:

10. Change from Device to the HoloLens Emulator:

11. Click on Debug, and Start without Debugging:

It will display in the simulator now. You have made your first prototype of a Mixed Reality program.