I'm using ICal Patch in SugarCRM to get calendar in ics format, I'm able to use it from Windows Calendar on my vista notebook, but in ZimbraDesktop I got this error "No such folder exists." when I try to load calendar.
The only difference is that WindowsCalendar ask me for user/password, while ZimbraDesktop does not.
A Google Calendar works in ZImbraDesktop.
Is the authentication the problem ?