SSH protocol does not provide method for changing account password.

However there are methods by which SSH server can enforce password change, in case the previous one expires. There are two possible methods, both are supported by WinSCP:

• Explicit password change request.
• Using keyboard-interactive authentication.

FTP protocol has an extension that allows changing of password. This feature is not supported by most servers, neither by WinSCP. Most webhosting providers have their own method for changing a password (typically via their web site).