Visual Studio 15 not detecting Windows 10 SDK

Today I downloaded standalone installer for Windows 10 SDK which downloaded all the required files of about 700 MB. Then I installed it with a setup file placed within downloaded content. But still Visual Studio is showing:

Restarted PC also. Windows Software Dev Kit is listed under Programs and Features means it's installed properly. When I Modify the installation of Visual Studio 2015, it starts downloading from installer. Please help