Cannot open stdio.h file

I have updated Visual Studio from Community 2015 to Community 2017. Now when I build, I get error messages: "Error (active)" E1696 cannot open source file "stdio.h". The related line looks like this:

#include <stdio.h>

      

        
        
        
      

    

If I create a new project stdio.h is found.

So I looked at the Project Configuration Properties -> VC ++ Directories and I see the following:

Include Directories  $(VC_IncludePath);$(WindowsSDK_IncludePath);

      

        
        
        
      

    

So it seems like VC_IncludePath needs to be installed, but I can't seem to find a place to install it. Please note, I cannot find the macro, and it may be because I am using the free version of Visual Studio 2017.

Can someone please make a suggestion?