MVC Core Windows Authentication not working - asp.net-core-mvc

Question

I'm trying to set up an MVC Core Web App with Windows Authentication in Visual Studio 2022 but I can't get it to work.
I create a new project and select the Windows Authentication option. I immediately try to run the app but I get a blank page.
For troubleshooting I then added the following else clause so I can see what the problem is on my development machine.
if (!app.Environment.IsDevelopment())
{
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();
}
else
{
// Development Environment
app.UseStatusCodePages();
}
and I can then see that I have a '401 Unauthorised' status code. And then if I add [AllowAnonymous] to my Index action I can finally see the home page but my windows username is not displayed. I would expect to see 'Hello username' displayed in the top right but I don't seem to be authenticated, let alone authorized.
Apart from the two troubleshooting steps above, this is a brand new project straight out of the box but I've pasted my Program.cs below for reference.
What do I need to do to get Windows Authentication to work?
Thanks
using Microsoft.AspNetCore.Authentication.Negotiate;
var builder = WebApplication.CreateBuilder(args);
// Add services to the container.
builder.Services.AddControllersWithViews();
builder.Services.AddAuthentication(NegotiateDefaults.AuthenticationScheme)
.AddNegotiate();
builder.Services.AddAuthorization(options =>
{
// By default, all incoming requests will be authorized according to the default policy.
options.FallbackPolicy = options.DefaultPolicy;
});
builder.Services.AddRazorPages();
var app = builder.Build();
// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
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();
}
else
{
// Development Environment
app.UseStatusCodePages();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
app.Run();

Answer 1

You can follow my steps to fix the issue.
Enable IIS features in your develop machine, this just want to enable Windows authentication on Windows.
Tips: Please expand all the fields and tick them, then click Apply.
Delete the .vs folder inside your project, this steps just want to reset the applicationhost.config.
The latest step, we need to double check the settings file in project.
Then the issue should be fixed now.