For one SFTP site that I use regularly, Cyberduck says the password is expired and requires me to change it. It will not proceed with the connection. SFTP from the command line works fine and doesn't not mention anything about the password being expired. FileZilla connects without complaint as well. For this site, I only have SFTP access. SSH gives me a "permission denied" error. Not sure if this is why Cyberduck doesn't work with this site.
For the record, there is no error message. Cyberduck just refuses to connect while sftp on the command line and FileZilla do not mention anything about an expired password nor do they require a password change -- they allow me to connect, up/download files, etc. as usual. Cyberduck says the password is expired, prompts me to change the password, and will not connect without changing the password. I have tried changing the password using the cyberduck prompts and that does not work (I don't think the server will allow me to change the password for this login).