Re: Partially solved
Anyway, WinSCP should not block in case of access denied, but log it and continue.
See Continue on error option:
https://winscp.net/eng/docs/ui_keepuptodate
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
Anyway, WinSCP should not block in case of access denied, but log it and continue.