WinSCP closes completely upon closing the Login dialogue box

When trying to login to an account, if for some reason the login fails and you get a message like:

Authentication log (see session log for details):

You then cannot get back to the main WinSCP window (to find the session log for example), since when you close the Login box the whole app closes.[/quote]

How does the main window help you with finding the session log?

Anyway, you probably want to turn off Keep main window open when the last session is closed:
https://winscp.net/eng/docs/ui_pref_window

Ah yes, thanks.