Manage Outlook AutoComplete list

When you send an email from your Outlook account, the AutoComplete list function (also known as cache) creates a list of people you have previously emailed. In some cases, if you have emailed someone who has left the College and then returned, the cached information may no longer work even if their email address remains the same.

If you receive a bounce‑back message saying that your email was undeliverable even though the AutoComplete list entry contains the correct email address, you can clear your AutoComplete cache in the following ways:

NOTE: Microsoft does not share your AutoComplete list between your Outlook desktop application and Staff Email Outlook Web App. Each application creates a separate AutoComplete list.

Remove AutoComplete list entries one at a time

  1. In Outlook, click the New Email button.outlook new email button
  2. In the new message window, in the To field, type the first few characters of the AutoComplete entry that you want to remove to have it appear in the list of suggestions.
  3. Hover your mouse over the entry to highlight it but do not select it, and then click X to remove the entry from the list.hover mouse over item and click X
NOTE: Clicking X will remove the entry from the list and prevent it from appearing in your cache, but it may still appear in other areas of your Outlook, such as search boxes. If you send a new email to the same address, Outlook will add the entry back to the list.

Clear your entire AutoComplete list

  1. Click the File tab in the top left‑hand corner.outlook file tab
  2. In Backstage View, click Options on the left‑hand pane.options button in backstage view
  3. On the Outlook Options menu, click Mail on the left‑hand pane.mail tab on outlook options menu
  4. In the Send messages group, click Empty Auto‑Complete List.empty auto-complet list button in send messages group
  5. On the Microsoft Outlook window, click Yes, and then click OK.yes button

Turn off the AutoComplete list function

  1. Click the File tab in the top left‑hand corner.outlook file tab
  2. In Backstage View, click Options on the left‑hand pane.options button in backstage view
  3. On the Outlook Options menu, click Mail on the left‑hand pane.mail tab on outlook options menu
  4. In the Send messages group, clear the Use Auto-Complete List to suggest names when typing in the To, Cc, and Bcc lines check box, and then click OK.clear autocomplete check box

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