为什么注销仅在本地有效，而在服务器上无效

我使用此代码执行注销

public ActionResult LogOff()
    {
         FormsAuthentication.SignOut();
        // Drop all the information held in the session
        Session.Clear();
        Session.Abandon();
        // clear authentication cookie
        HttpCookie cookie1 = new HttpCookie(FormsAuthentication.FormsCookieName, "");
        cookie1.Expires = DateTime.Now.AddYears(-1);
        Response.Cookies.Add(cookie1);
        // clear session cookie
        HttpCookie cookie2 = new HttpCookie("ASP.NET_SessionId", "");
        cookie2.Expires = DateTime.Now.AddYears(-1);
        Response.Cookies.Add(cookie2);
        foreach (var cookie in Request.Cookies.AllKeys)
        {
            Request.Cookies.Remove(cookie);
        }
        return RedirectToAction("Index", "Home");
    }

它在本地工作正常，但是当我在服务器中发布我的应用程序时，即使用户已经注销，如果用户单击浏览器的Back按钮，页面仍然会显示。