Asp.Net Core 2.1 SPA React Template with Windows Authentication

Question

When I use Windows Authentication in my debug environment(IIS Express), I get the proper domain name. But when I push it to the production environment(IIS), I get no domain name at all. Am I missing something?

Reproduce my Issue:

I've created a new Web Project in VS2017 (15.7.6) with the React template and enabled Windows authentication by changing the launchSettings.json to:

"windowsAuthentication": true,
"anonymousAuthentication": false,

Now I changed the ConfigureServices Method in Startup.cs to this:

public void ConfigureServices(IServiceCollection services) 
{
    services.Configure<IISOptions>(options =>
    {
        options.AutomaticAuthentication = true;
    });
    services.AddAuthentication(IISDefaults.AuthenticationScheme);

    var names = new[] { "peter", "joey" };


    services.AddAuthorization(options =>
    {
        options.AddPolicy("OnlyEmployees", policy =>
        {
            policy.AddAuthenticationSchemes(IISDefaults.AuthenticationScheme);
            policy.Requirements.Add(new CheckForEmployee(names));
        });
    });
    services.AddSingleton<IAuthorizationHandler, CheckForEmployeeHandler>();

    services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
    // In production, the React files will be served from this directory
    services.AddSpaStaticFiles(configuration =>
    {
        configuration.RootPath = "ClientApp/build";
    }); 
}

I added 2 Files to the Project:

CheckForEmployee.cs

using Microsoft.AspNetCore.Authorization;

namespace WebServer_WindowsAuthentication
{
    public class CheckForEmployee : IAuthorizationRequirement
    {
        public string[] Names { get; set; }
        public CheckForEmployee(string[] names)
        {
            Names = names;
        }
    }
}

CheckForEmployeeHandler.cs

using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;

namespace WebServer_WindowsAuthentication
{
    public class CheckForEmployeeHandler : AuthorizationHandler<CheckForEmployee>
    {
        protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, CheckForEmployee requirement)
        {
            if (requirement.Names.Contains(context.User.Identity.Name))
            {
                context.Succeed(requirement);
            }

            return Task.CompletedTask;
        }
    }
}

Answer 1

Anyone facing a similar problem, make sure Windows Authentication is enabled on your IIS Service. This solved my problem.