How do I use both Windows and Anonymous authentication in HTTP.SYS server

Having trouble enabling both Anonymous and Windows authentication working when using http.sys as webserver in ASP.NET core 2.0. It works fine when I host in IIS but refuses to work in http.sys server. Method tags 

[Authorize]

Windows

Program.cs

   .UseHttpSys(options =>
    {
        options.Authentication.Schemes =  AuthenticationSchemes.Negotiate |
   AuthenticationSchemes.NTLM;
        options.Authentication.AllowAnonymous = true;
        options.UrlPrefixes.Add("http://localhost:5000");
    })

HomeController.cs

[Authorize]
    public class HomeController : Controller
    {
        [Authorize]
        public IActionResult Windows()
        {
            return Content ("You are " + User.Identity.Name +  "; Authentication Type:" + User.Identity.AuthenticationType );
        }

        [AllowAnonymous]
        public IActionResult Anonymous()
        {
            return Content ("You are " + User.Identity.Name +  "; Authentication Type:" + User.Identity.AuthenticationType );;
        }
    }