Program.cs

using System;
using edd_blazor_server_poc.Areas.Identity;
using edd_blazor_server_poc.Controllers;
using edd_blazor_server_poc.Data;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Components.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddDbContext<ApplicationDBContext>(options =>
{
    options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection"));
});

builder.Services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = true)
    .AddEntityFrameworkStores<ApplicationDBContext>();

//builder.Services.AddAuthentication(options =>
//    {
//        options.DefaultAuthenticateScheme = CookieAuthenticationDefaults.AuthenticationScheme;
//        options.DefaultSignInScheme = CookieAuthenticationDefaults.AuthenticationScheme;
//        options.DefaultChallengeScheme = OpenIdConnectDefaults.AuthenticationScheme;
//    }).AddCookie(options => options.LoginPath = "/account/login")
//    .AddOpenIdConnect(options =>
//    {
//        options.Authority = "https://demo.identityserver.io";
//        options.ClientId = "interactive.confidential";
//        options.ClientSecret = "secret";
//        options.ResponseType = "code";
//        options.ResponseMode = "query";
//        options.UsePkce = true;
//        options.Scope.Add("api");
//        options.SaveTokens = true;
//    });


builder.Services.Configure<IdentityOptions>(options =>
{
    // Password settings.
    options.Password.RequireDigit = true;
    options.Password.RequireLowercase = true;
    options.Password.RequireNonAlphanumeric = true;
    options.Password.RequireUppercase = true;
    options.Password.RequiredLength = 8;
    options.Password.RequiredUniqueChars = 1;

    // Lockout settings.
    options.Lockout.DefaultLockoutTimeSpan = TimeSpan.FromMinutes(5);
    options.Lockout.MaxFailedAccessAttempts = 5;
    options.Lockout.AllowedForNewUsers = true;

    // User settings.
    options.User.AllowedUserNameCharacters =
        "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-._@+";
    options.User.RequireUniqueEmail = false;
});

builder.Services.ConfigureApplicationCookie(options =>
{
    // Cookie settings
    options.Cookie.Name = "NIDirectBlazorCookie";
    options.Cookie.SecurePolicy = CookieSecurePolicy.Always;
    options.Cookie.HttpOnly = true;
    options.ExpireTimeSpan = TimeSpan.FromMinutes(30);

    options.LoginPath = "/Identity/Account/Login";
    options.AccessDeniedPath = "/Identity/Account/AccessDenied";
    options.SlidingExpiration = true;
});

builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor();
builder.Services.AddScoped<DeveloperService>();
builder.Services.AddScoped<AuthenticationStateProvider, RevalidatingIdentityAuthenticationStateProvider<IdentityUser>>();

var app = builder.Build();

if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    app.UseHsts();
}

app.UseHttpsRedirection();

app.UseStaticFiles();

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

app.MapBlazorHub();
app.MapFallbackToPage("/_Host");

app.Run();