AutoComplete not working correctly in Outlook 2010

Applies to: Microsoft Outlook 2010

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AutoComplete (not to be confused with Suggested Contacts ) displays names and email addresses as you start to type them. These are possible matches to names and email addresses gathered from the email that you have sent in the past. If AutoComplete isn't working, try these fixes: 

Check to see if AutoComplete is turned on

Here's how to see if AutoComplete is turned on:
 
  1. In Outlook, click File > Options.
  2. Select the Mail tab.
  3. Scroll roughly halfway down until you see Send messages. Ensure the Use AutoComplete List to suggest names when typing in the To, Cc, and Bcc lines box is checked.
    Send messages
  4. If it's already turned on, your first troubleshooting step should be to clear out the Auto-Complete list. Click the Empty AutoComplete List button.
  5. You’ll see a confirmation window about clearing the AutoComplete list, Click Yes.
  6. Try sending a few test emails to the same email address. If AutoComplete doesn't start working, try the other steps listed in this article.
What is the difference between AutoComplete and Suggested Contacts

Outlook also adds a folder to Contacts labeled Suggested Contacts. Addresses get added to this folder as you send or reply to messages addressed to people who don’t exist in your Contacts folder. Outlook doesn't look in Suggested Contacts for names during the AutoComplete process. It only stores addresses that you might want to add to your Contacts. You can double-click an entry in Suggested Contacts and a Contact Form opens that allows you to save it to your Contacts Folder.

Need more help?

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