Please read F.A.Q.
I read FAQ, but it did not work for me.
I validated that I can "sudo su" without being prompted for a password. In WinSCP-Environment-SCP-Shell I selected Enter, and typed "/usr/bin/sudo su".
WinSCP connects, then dispays message "Starting session", and then aborts.
The box is Linux Red Hat 7.2.
WinSCP is version 3.7.1
It would be nice if WinSCP had a button that I could press to automatically "su" to root. Otherwise it's completely useless for me and the remote server I administrate.
Joe