Flash has just come to Internet Explorer 10 on Windows 8 and RT

Heads up, Windows users. Microsoft has released an update for Internet Explorer 10 that enables. Flash content in both Windows 8 and Windows RT. As many of you are likely aware the "full web" experience has been limited to
the desktop browser on Windows 8 up until this point, which was an intentional move by Microsoft in order to improve performance, battery life and the touch experience. With the update, Internet Explorer 10 users for Windows 8 / RT will
be able to access Flash content on all but a few sites that Microsoft has selectively blacklisted due to their negative impact on the user experience. Naturally, users of IE10 within the Windows 8 desktop environment will still be
able to access all Flash-enabled content, regardless of whether the site is on the blackballed list. Now that you've waited this long, what's another day among friends?

 For the full story by here https://blogs.msdn.com/b/ie/archive/2013/03/11/flash-in-windows-8.aspx