Outlook 2011 cannot send to contact groups after latest update
After the latest update to Outlook 2011 (14.3.2), Mac users are unable to send emails to contact groups. They receive this error:
EmailAddress or ItemId must be included in the request.
I haven’t seen a fix or workaround from Microsoft yet.
Update 3/25/2013: A recent update to Outlook 2011 added the ability to expand a contact group into its constituent members after you’ve added it to the To field. (You’ve always been able to do that in the Windows version.) This is a decent workaround until the root problem is fixed.