对 SSPI 的调用失败，请参阅内部异常.收到的消息在 Windows 7 中是意外的或格式不正确]

>我收到以下错误" 对 sspi 的调用失败，请参阅内部异常。收到的消息在 Windows 7 中是意外的或格式不正确"。我尝试了所有可能的方法，但没有运气。请检查一下

这是代码

        int port = 2195;
        String deviceID = "d6c597fcc4e3426993cf29a3a8857efbed3462d5d8e9e32c0f8b387djkdklldk";
        String hostname = "gateway.sandbox.push.apple.com";     // TEST
        //String hostname = "gateway.push.apple.com";           // REAL
        string p12FilePassword = "password";
        //        @"cert.p12";
        String certificatePath = HttpContext.Current.Server.MapPath("~/Certificate.p12");

        X509Certificate2 clientCertificate = string.IsNullOrEmpty(p12FilePassword) ? new X509Certificate2(File.ReadAllBytes(certificatePath)) : new X509Certificate2(File.ReadAllBytes(certificatePath), p12FilePassword, X509KeyStorageFlags.MachineKeySet);
        X509Certificate2Collection certificatesCollection = new X509Certificate2Collection(clientCertificate);
        TcpClient client = new TcpClient(hostname, port);
        SslStream sslStream = new SslStream(client.GetStream(), false, ValidateServerCertificate, SelectLocalCertificate);
        try
        {
            sslStream.AuthenticateAsClient(hostname, certificatesCollection, System.Security.Authentication.SslProtocols.Tls, false);
        }
        catch (Exception e)
        {
            throw (e);
            //client.Close();
            //return;
        }