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How to disable the Auto-Complete Cache in Outlook 2003 and 2007

Description: Microsoft Outlook 2003 and 2007 have a feature called Email Address Auto Complete. When typing an email address into the TO:, CC: or BCC fields Outlook shows a list of matching email addresses from the auto-complete cache, that is to say email addresses that have been already used. This article describes how to disable this feature in Outlook 2003 and 2007.

  1. Click on the Tools menu and select Options.
    Outlook, Tools, Options
  2. Click on the E-mail Options button.
    Outlook Email Options
  3. Click on the Advanced E-mail Options button.
    Outlook Advanced Email Options
  4. Uncheck the box called Suggest names while completing To, Cc, and Bcc fields. Then click OK.
    Outlook Options Suggest Names While Completing
  5. Click OK again.
    OK to Save
  6. Click OK one more time to close the Outlook Options dialog.
    OK to Save