Program.cs

using DinkToPdf.Contracts;
using DinkToPdf;
using Microsoft.AspNetCore.Authentication.Cookies;
using RadioDemo.Helpers;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddControllersWithViews();

var context = new CustomAssemblyLoadContext();
context.LoadUnmanagedLibrary(Path.Combine(Directory.GetCurrentDirectory(), "LibreriaPDF/libwkhtmltox.dll"));
builder.Services.AddSingleton(typeof(IConverter), new SynchronizedConverter(new PdfTools()));

builder.Services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
    .AddCookie(option =>
    {
        option.LoginPath = "/Login/Index";
        option.AccessDeniedPath = "/Error/403";
        option.ExpireTimeSpan = TimeSpan.FromMinutes(30);
    });

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error/500");
    app.UseHsts();
}

app.UseHttpsRedirection();
app.UseStaticFiles();

app.UseRouting();

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

app.UseStatusCodePagesWithReExecute("/Error/{0}"); // para errores como 404, 403

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

app.Run();