We are running Exchange 2000 in mixed mode and are trying to share calendars
and folders using group permissions. In order to assign group permissions do
these groups need to be global security groups? When we try to give
permissions to a universal distribution group, using Outlook 2002 SP2, we
get an error message "The modified permissions could not be saved. The
client operation failed."

I believe you'll need to be in native mode to do this. Note, however, that
this would be best posted in m.p.exchange.admin as it isn't an Outlook
issue.

Jeff Martin wrote:
> We are running Exchange 2000 in mixed mode and are trying to share
> calendars and folders using group permissions. In order to assign
> group permissions do these groups need to be global security groups?
> When we try to give permissions to a universal distribution group,
> using Outlook 2002 SP2, we get an error message "The modified
> permissions could not be saved. The client operation failed."