Cannot initialize SFTP protocol. Is the host running a SFTP

I've been having this error with my winscp3 in windows server 2000

It is able to authenticate the username and password but it fails to start session and display this error message

"Cannot initialize SFTP protocol. Is the host running a SFTP?"
Connection has been unexpectedly closed. Server sent command exit status 0.

Can anyone help me with my problem?

tnx

Can you connect with any other SFTP client?

did you find an answer as i have the same problem.

many thanks

andrew