private static void LogoutCookie(HttpResponseBase response, HttpRequestBase request, Blog blog) { var cookieName = request.GetFullCookieName(blog); if (request.Cookies[cookieName] != null) { var authCookie = new HttpCookie(cookieName) { HttpOnly = true, Expires = DateTime.UtcNow.AddYears(-30), Value = request.Browser == null || request.Browser["supportsEmptyStringInCookieValue"] == "false" ? "Empty" : String.Empty }; request.Cookies.Remove(cookieName); response.Cookies.Add(authCookie); } }