You will find this update in the optional updates.
It allows C++ that is developed in Windows 10 developers tools to run correctly on older windows operating systems. That's any Windows OS before 10.
This does/will apply to our Simulator.
So, if you normally ignore the optional updates, install this one.
Eric.
Here's a page with more info.
https://support.microsoft.com/en-us/kb/2999226