You might want to delete a contact from your Microsoft Outlook address book because the contact is a duplicate, is no longer in use or you may not have a relationship with the person anymore. Either way, you can delete unwanted Outlook contacts in just a few minutes. The procedure to delete Outlook contacts is the same in both Microsoft Outlook 2003 and Microsoft Outlook 2010.
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Click "Start" and open Microsoft Outlook. Click on "Contacts" in the lower-left corner.
Choose your sorting method. If you have many contacts, considering clicking on "Phone List." This displays all of your contacts in a vertical panel, rather than the default "Business Card" view.
Double-click on the contact you want to delete. This opens the contact's information pane.
Click "Delete" to delete the contact from your address book. Repeat as necessary.