When you create a new ASP.NET MVC project, you are going to get a lot of bloat headers of any response from the page. This is done by default and it’s sometimes annoying  because none of it is either necessary or helpful. Worse, it can be harmful as potential hackers can easily identify the system, for example.
Here is the default ASP.NET project’s response ot a request for a page:
Cache-Control:private Content-Encoding:gzip Content-Length:2616 Content-Type:text/html; charset=utf-8 Date:Wed, 11 Jun 2014 16:07:59 GMT Server:Microsoft-IIS/8.0 Vary:Accept-Encoding X-AspNet-Version:4.0.30319 X-AspNetMvc-Version:4.0 X-Powered-By:ASP.NET The first thing you need to do is remove X-AspNetMvc-Version header. To remove this, simply open your Global.asax.cs file to Application_Start, then add this code:
MvcHandler.DisableMvcResponseHeader = true;
Read the rest of the tutorial here:Â http://www.codeproject.com/Tips/785867/ASP-NET-MVC-Remove-IIS-Header-Bloat