Configuration
User running on Windows Server 2008/Office 2010 has been getting this error since being setup with email a few weeks ago. It's a new profile. The Outlook configuration is set so the Exchange mailbox is the default and autoarchive runs every day to move items from the mailbox to an archive.pst.
Things I've tried
The .pst file was created new with Outlook 2010. I even created another new one and migrated everything over, ensuring it was not in the older 97-2002 format. But she continues to receive this message.
I have viewed the contents of "Outlook today" on the mailbox and there are no emails there (in case user somehow was able to move an outlook item to the root of the information store.
And also have tried recreating her 2008 profile (even though it was already new).
I am lost! Any ideas?