Re: Error Listing Directory '/'.
As this does not seem to be a WinSCP issue, to solve this "asap", you better contact your network administrator.
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
Are the other people connecting from the same network?
Can you post theirs and yours session log file?
Can you login using any other FTP client?
Lost Connection. Timeout detected. [data connection] Could not retrieve directory listing Error listing directory '/'.