Removing Duplicate Contacts from Outlook 2007

Often times duplicate contacts in Outlook will be caused by ActiveSync or other PIM device mistakes.  Luckily in these cases its fairly easy to remove these contacts, especially if the issue hasn’t been going on long enough for the user to have modified these duplicates.


  1. Backup the contacts folder to a Personal folder
  2. Using the field chooser, add the “Modified” field
  3. Sort by modified, and locate the duplicates – all should have the same modified time
  4. Select the duplicate items and remove them!