If you go to Tools || Address Books || Tools || Options || All the Address
Books will be listed in the bottom half of the view || if you select one and
click the properties button it will tell where the address book is located.
This way you can use the folder list to locate the folders and either go
into its properties and select the Outlook Address Book and un-check as
enable as address book or ultimately delete it. If you cannot find the
address books then removing and re-adding the Outlook Address Book Service
should remove the erroneous entries. To remove the Outlook Address Book
service then go to Tools || Email Accounts || view or change existing
directories or address books || NEXT || highlight the Outlook Address Book
and select Remove || Restart Outlook and then re-add the Service.