How to clear the Auto-Complete Cache in Outlook 2010

Description: Microsoft Outlook 2010 has 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 already been used. This article describes how to clear this list in Outlook 2010.

  1. Click on the File tab and select Options.
    Outlook 2010, File, Options
  2. Click on the Mail button.
    Outlook Options
  3. Scroll down to the Send messages section.
    Outlook, Mail, Send Message Options
  4. Click the Empty Auto-Complete List button.
    Outlook Mail Empty Auto Complete
  5. A box will pop up asking if this is really what you want to do. Click Yes.
    Confirmation Are you sure
  6. Click OK to close the Outlook Options dialog.
    OK to complete