I am trying to share a users calendar in Outlook 2003 with a group rather than enter 10 different names that are always changing. I created a mail enabled security group and added the users. When I go to share this particular calendar, I can this group in the GAL. After adding the group and giving it reviewer permissions the users still cannot open it. They get the error "Unable to display the folder. The calendar folder could not be found". I read that you need to have an owner permission assigned to at least one user under the permissions so I tried that as well. No luck.