Static class to help with IIS Windows Authentication and 401

ChangeLogin.cs

public ActionResult ChangeLogin(string userGuid = "")
    {
        if (String.IsNullOrEmpty(userGuid))
        {
            userGuid = Guid.NewGuid().ToString();
            return RedirectToAction("ChangeLogin", new { userGuid });
        }
        else
        {
            Response.StatusCode = Security.StatusKeeper.Instance.GetCode(userGuid);
        }

        if (Response.StatusCode == 200)
        {
            return RedirectToAction("Index");
        }
        else
        {
            return View("Index");
        }
    }

StatusKeeper.cs

public class StatusKeeper
    {
        private static StatusKeeper instance;
        private Dictionary<string, int> currentCodes = new Dictionary<string, int>();
        private Dictionary<string, int> postCounts = new Dictionary<string, int>();

        private StatusKeeper() { }

        public static StatusKeeper Instance
        {
            get
            {
                if(instance == null)
                {
                    instance = new StatusKeeper();
                }
                return instance;
            }
        }

        public int GetCode(string userGuid)
        {
            userGuid = userGuid.ToLower();
            int httpCode = GetStatusCode(userGuid);
            if(httpCode == 200)
            {
                RemoveUserGUID(userGuid);
            }

            return httpCode;
        }

        private int GetPostCount(string userGuid)
        {
            int yourCount = 0;
            if (postCounts.ContainsKey(userGuid))
            {
                yourCount = postCounts[userGuid] + 1;
                postCounts[userGuid] = yourCount;
            }
            else
            {
                yourCount = 1;
                postCounts.Add(userGuid, yourCount);
            }
            return yourCount;
        }

        private int GetStatusCode(string userGuid)
        {
            int yourCount = GetPostCount(userGuid);
            int yourCode = 200;

            if (currentCodes.ContainsKey(userGuid))
            {
                yourCode = currentCodes[userGuid];
                if (yourCode == 401 && yourCount > 2)
                {
                    yourCode = 200;
                    yourCount = 0;
                }
                else
                {
                    yourCode = 401;
                }
                currentCodes[userGuid] = yourCode;
            }
            else
            {
                currentCodes.Add(userGuid, 401);
                yourCode = 401;
            }
            postCounts[userGuid] = yourCount;
            return yourCode;
        }

        private void RemoveUserGUID(string userGuid)
        {
            currentCodes.Remove(userGuid);
            postCounts.Remove(userGuid);
        }
    }