SessionOptions sessionOptions = new SessionOptions();

sessionOptions.Protocol = Protocol.Scp;

sessionOptions.HostName = mtpAddress; //IP Address

sessionOptions.UserName = "root";

sessionOptions.Password = "";

sessionOptions.PortNumber = 22;

sessionOptions.GiveUpSecurityAndAcceptAnySshHostKey = true;



using (Session session = new Session())

{

    //Connect

    session.Open(sessionOptions); //<------------------------------------------FAILS HERE



    // Upload files

    TransferOptions transferOptions = new TransferOptions();

    transferOptions.TransferMode = TransferMode.Binary;



    TransferOperationResult transferResult;

    transferResult = session.GetFiles(sourceFilePath, destinationFilePath, removeSource, transferOptions);



    // Throw on any error

    transferResult.Check();

}