The current drivers available for Microsoft® Windows 10 are provided with Windows Update. They are Beta drivers from Intel.
Intel® Iris™, Iris™ Pro, and HD Graphics Beta Driver for Windows* 10
Intel® Download Center
Which means, what? That Intel's drivers won't actually install (which we already know) and that they should be ignored? And that MS is being supplied with beta drivers from Intel and delivering them as part of Windows 10?
The concern here is maintaining a stable and non-conflicting source for the appropriate drivers that best perform with our hardware.
This is the link for the latest video drivers for your graphics controller: