|WARNING: LEGACY DOCUMENTATION|
|Note that that from Unity 2017.1 this documentation is out-dated. 2017–06–30|
Currently if you want to build for Universal Windows 10 Applications (a.k.a UWP), you have to do it on Windows 10.
Unity supports three UWP: X86, X64 and ARM.
In order to build applications for Universal Windows 10 application, Visual Studio 2015 RTM installation is required, the minimum version is 14.0.23107.0