How do you use both anonymous and windows authentication in ASP.NET Core 2.0

Question

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] on HomeController Windows action fails with HTTP 500 and never prompts for authentication.

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 );;
        }
    }

Exception

An unhandled exception occurred while processing the request.

InvalidOperationException: No authenticationScheme was specified, and there was no DefaultChallengeScheme found.
Microsoft.AspNetCore.Authentication.AuthenticationService+<ChallengeAsync>d__11.MoveNext()

When you receive a 500 error you should always post the exact exception message, how else should people help you? — Tseng, Sep 10 '17 at 20:15

score 1 · Answer 1 · answered Sep 10 '17 at 20:26

Need to add following to "services" section despite the fact that it's not hosted in IIS

services.AddAuthentication(Microsoft.AspNetCore.Server.IISIntegration.IISDefaults.AuthenticationScheme);

Per ASP.NET Core 2.0 HttpSys Windows Authentication fails with Authorize attribute (InvalidOperationException: No authenticationScheme was specified)

How do you use both anonymous and windows authentication in ASP.NET Core 2.0

1 Answers1