Startup.cs

using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Authentication.WsFederation;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;


namespace NewClaimsDataTakeThree
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            Microsoft.IdentityModel.Logging.IdentityModelEventSource.ShowPII = true;
            services.AddAuthentication(sharedOptions =>
                {
                    sharedOptions.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                    sharedOptions.DefaultSignInScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                    sharedOptions.DefaultChallengeScheme = WsFederationDefaults.AuthenticationScheme;
                })
                .AddWsFederation(options =>
                {
                    options.Wtrealm = "<Relying Party ID, eg https://...>";
                    options.MetadataAddress = "<Metadata xml, eg https://domain.com/FederationMetadata/2007-06/FederationMetadata.xml";
                })
                .AddCookie();

            services.AddAuthorization(options =>
            {
                options.FallbackPolicy = options.DefaultPolicy;
            });
            services.AddControllersWithViews();
        }
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }
        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }
            app.UseHttpsRedirection();
            app.UseStaticFiles();

            app.UseRouting();
            app.UseAuthentication();
            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");
            });
        }
    }
}