SSHAuthenticationExcetion :No suitable authentication method found to complete authentication

Question

I'm trying to connect on a server in vb.net win forms. I put a button and a text area to receive the data. But I'm unable to connect on the server. The server is open because i can ping it.

Private Sub SimpleButton1_Click(sender As System.Object, e As System.EventArgs) Handles SimpleButton1.Click
    Dim PasswordConnection = New PasswordAuthenticationMethod("username", "pass")
    Dim KeyboardInteractive = New KeyboardInteractiveAuthenticationMethod("username")
    Dim ConnectionInfo = New ConnectionInfo("server.com", 22, "username", PasswordConnection, KeyboardInteractive)

    Using client As New SshClient(ConnectionInfo)
        client.Connect()

        Dim cmd As SshCommand
        Dim result As String
        Dim result2 As String

        cmd = client.CreateCommand("who")
        cmd.CommandTimeout = TimeSpan.FromSeconds(10)
        result = cmd.Execute
        result2 = cmd.Error
        MemoEdit1.Text = cmd.ExitStatus

        If String.IsNullOrEmpty(result2) Then
            MemoEdit1.Text = result2
        End If

        MemoEdit1.Text = result

        client.Disconnect()
    End Using
End Sub

Am I doing something wrong?
The program stuck directly on the "client.Connect()". As you can see im trying to connect on the event click of SimpleButton1

Answer 1

Normally No suitable authentication method found to complete authentication is used is returned from an SSH server when the server does not allow authentication by the offered methods by the client.

The SSH server could only allow public key authentication, or some form of two factor authentication in turn preventing password authentication. Download an SSH client like Putty and try to connect to the server directly and see what the result is.