[Connect Update 5 C++] Trouble getting compiler to recognize windows files

Upgraded to the latest SDK for Update 5

I have installed VS 2015 since that is now required..now I am having a hell of a time getting the bentley compiler to recognize files like windows.h and winsock.h

fatal error C1083: Cannot open include file: 'windows.h': No such file or directory

do I need to include the windows SDK paths in my make file?

Any help would be greatly appreciated!