Page not showing login window on enter

Question

Hello I have webpage which uses Windows authentication. It is working well in

• IE
• Chrome
• Opera

and not working in

• Firefox

In Firefox and opera when I try enter my page modal window appears asking for windows login and password. When I input them I can browse my page. In Chrome and IE I don't need to do anything. For me its strange.

Controller:

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;
using magazyn.Models;
using magazyn.Autorization;
using System.Text;
namespace magazyn.Controllers
{
    public class HomeController : Controller
    {
        private EquipmentEntities db = new EquipmentEntities();
        [AllowAnonymous]
        public ActionResult Index()
        {
            return View();
        }
        public ActionResult About()
        {
            ViewBag.Message = "Your application description page.";
        return View();
    }

    public ActionResult Error401()
    {
        return View();
    }

}
}

As You can see ther is [AllowAnonymous] attribute so why Firefox and Opera demands login and password to enter the page?

@Update: I check IIS config. Anonous Authentication is enabled.

Answer 1

Ok found solution. I needed to follow this steps:

• Open Firefox
• In the Address bar type about:config
• In the search/filter field type ntlm
• Set network.automatic-ntlm-auth.trusted-uris to .company_name.com
• Set network.automatic-ntlm-auth.allow-non-fqdn to true by right-clicking and selecting "toggle"
• In the search/filter field type negotiate
• Set network.negotiate-auth.trusted-uris to .company_name.com
• Set network.negotiate-auth.allow-non-fqdn to true by right-clicking and selecting "toggle"
• Click OK if present
• Restart Firefox.

Quite simply but now I need to tell this to all users using FF or tell them to change browser... It's strange that them didnt' implement windows auth like other browsers