Application logout when I made cookies secure

protected void Application_EndRequest(Object sender, EventArgs e)
       {
           // Iterate through any cookies found in the Response object.
           foreach (string cookieName in Response.Cookies.AllKeys)
           {
               Response.Cookies[cookieName].Secure = true;
               Response.Cookies[cookieName].Path = ConfigurationManager.AppSettings["UserDefiniedCookiePathFilter"];
           }
       }

protected void Application_EndRequest(Object sender, EventArgs e)
       {
           // Iterate through any cookies found in the Response object.
           foreach (string cookieName in Response.Cookies.AllKeys)
           {
               Response.Cookies[cookieName].Secure = true;
               Response.Cookies[cookieName].Path = ConfigurationManager.AppSettings["UserDefiniedCookiePathFilter"];
           }
       }