User is attempting to access the calendar of a resource, via Outlook 2010 client. It is displaying message "You do not have permission to view this calendar. Would you like to ask...."
However, when the user logs into Outlook Web App, user is able to access this calendar with no problem. Permissions have been verified. Any thoughts or ideas as to what the problem might be and how to resolve?
Please note, we have already re-created the Outlook profile more than once. Each time this was done, it would work for a few days and then it would revert back.