How to persist cookies in ASP.NET MVC

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C#

MVC5

Hello All,

I am creating one cookie and setting it's expire to 30 days,but once i close browser,
cookie doesn't persist for second time when user login in a same day itself.

Please find the below code :

public ActionResult SaveUserTypeCookies(string usertype, string returnUrl)
{
   if (Request.Cookies["User"] != null)
   {
       HttpCookie cookie = Request.Cookies["User"];
       cookie.Values["UserType"] = usertype;
       cookie.Expires = DateTime.Now.AddDays(30);
       Response.SetCookie(cookie);
   }
   else
   {
       HttpCookie cookie = new HttpCookie("User");
       //Need to remove below comment at production deployement
       // cookie.HttpOnly = true;
       //cookie.Secure = true;
       cookie.Values["UserType"] = usertype;
       cookie.Expires = DateTime.Now.AddDays(30);
       Response.Cookies.Add(cookie);
   }
   // return RedirectToAction("CreateUpsID");
   return Redirect(returnUrl);
}

Kindly suggest.