A call to SSPI failed, see inner exception.

Question

Hi,

There is an exception when connecting to Epp Server, "A call to SSPI failed, see inner exception." 

 

public void Connect()

{

var client = new TcpClient(EPP_REGISTRY_COM, PORT);

stream = new SslStream(client.GetStream(), false, ValidateServerCertificate)

{

ReadTimeout = READ_TIMEOUT,

WriteTimeout = WRITE_TIMEOUT

};

if (clientCertificate != null)

{

var clientCertificates = new X509CertificateCollection {clientCertificate};

stream.AuthenticateAsClient(EPP_REGISTRY_COM, clientCertificates, SslProtocols.Tls, false);

}

else

{

stream.AuthenticateAsClient(EPP_REGISTRY_COM);

}

}

 

 How to solve this ?