ASP.NET MVC 4 sessions expiring after 10 minutes on Windows Azure

I am currently creating a website using ASP.net and MVC4. When debugging locally, sessions work as expected without any problem and expire 1 day after they are logged in. However, on real site sessions, it expires every 10 minutes and becomes annoying.

Here is the web config

<sessionState timeout="1440" cookieless="false"></sessionState>

      

        
        
        
      

    

and

 <authentication mode="Forms">
      <forms loginUrl="~/Account/Login" timeout="1440"/>      
    </authentication>

      

        
        
        
      

    

Here is the login method from the controller.

public ActionResult LogIn(UserModel user)
    {
        var response = new RegistrationResponse();

        if (ModelState.IsValid)
        {
            var authUser = usersManager.IsValid(user);
            if (authUser != null)
            {
                FormsAuthentication.SetAuthCookie(user.Email, false);
                response.Authenticated = true;
                if (authUser.isAdmin)
                {
                    System.Web.HttpContext.Current.Session["Admin"] = true;
                }

                var cart = (ShoppingCart)System.Web.HttpContext.Current.Session["ShoppingCart"];

                System.Web.HttpContext.Current.Session["ShoppingCart"] = new ShoppingCart(authUser.UserId, cart.Items);
                System.Web.HttpContext.Current.Session["User"] = authUser.UserId;

                return Json("/Home");
            }
        }
        string errorMessage = "Your Email and/or Password could not be found.\n Please double check credentials and try again.";
        return Json("/Home/Login?errorMessage=" + errorMessage);
    }

      

        
        
        
      

    

I checked FTP to make sure the web.config is up to date on the live site. However, I am still knocked out every 10 minutes. Is there anything else I can check or might be the reason?

Thank you in advance

EDIT: I am using windows azure website and am currently free trial.