protected override CookieContainer GetCookieContainer(string host, HttpCookieCollection cookies) { var container = base.GetCookieContainer(host, cookies); if (this.PageContext.ExportContext.ExportOptions.MarkupMode != MarkupMode.EndUserSite && cookies.AllKeys.Any(x => x == ".AspNet.Cookies")) { cookies.TransferCookie(".AspNet.Cookies", host, container); } return(container); }