Which probably means you have some local system customizations
(outside of Emacs) that affect this.
Levis >>> The point is that super key works if I use the master brach of emacs. For example I am testing the master branch at this moment: 
Let me first I show you emacs version:GNU Emacs 25.1.50.1 (x86_64-w64-mingw32)
Then the tests:s-a is undefineds-b is undefineds-c in undefinedetcAll of them work. Why the master work and the official release not? 

 

    On Wednesday, September 21, 2016 8:27 PM, Eli Zaretskii <eliz@gnu.org> wrote:
 

 > Date: Wed, 21 Sep 2016 18:08:26 +0000 (UTC)
> From: Mambo Levis <mambo.levis@gmail.com>
> Cc: "robert-emacs@cochranmail.com" <robert-emacs@cochranmail.com>, 
>     "24453@debbugs.gnu.org" <24453@debbugs.gnu.org>
> 
> s-n
> s-[
> s-]
> s-.
> s-`
> s--
> s-;
> s-'
> s-\
> 
> Levis >>> Non of them. No one. 

Which probably means you have some local system customizations
(outside of Emacs) that affect this.