I am using WinSCP on my PC and it won work with the VMS system. Why?
In order for WinSCP to work with the VMS system, the following UNIX commands must be placed in the path: alias, cd, chgrp, chmod, chown, echo, groups, ls, mkdir, mv, pwd, scp, rm, unalias, and unset. The user must have sufficient permissions to execute these UNIX commands. Because VMS doesn’t have these commands, WinSCP will not work with the VMS SFTP server. See http://winscp.sourceforge.net/eng/requirements.php for additional information.