How to Back up or Copy an Outlook Autocomplete List

Back up the list of recently used emails in Microsoft Outlook

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Microsoft Outlook keeps a list of recently used email addresses that you typed in the To, Cc, and Bcc fields of an email message. Back up or copy that file elsewhere if you want to keep the list or use it on a different computer.

Instructions in this article apply to Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, and Outlook for Office 365.

How to Back up Your Outlook Auto-Complete List

Outlook keeps most of your essential data in a PST file, like your email messages, contacts list, and calendar items. The autocomplete list that displays when you start typing a name or email address is stored in a hidden message.

  1. Check your Office version. Open Outlook and go to File > Office Account (or Account) > About Outlook. You'll see either 64-bit or 32-bit listed at the top.

    Screenshot of Product Information
  2. Close Outlook.

  3. Download MFCMAPI. There's a 32-bit and a 64-bit version of MFCMAPI. Download the right one for your version of MS Office, not for your Windows version.

  4. Extract the MFCMAPI.exe file from the ZIP archive, then open the EXE file.

    Screenshot of extract MFCMAPI.exe
  5. In MFCMAPI, go to Session > Logon.

    Screenshot of Session > Logon
  6. Select the Profile Name dropdown arrow and choose the desired profile. There may be one called Outlook.

    Screenshot of Choose Profile
  7. Select OK.

  8. In the Display Name column, double-click your Outlook email profile.

    Screenshot of Display Name
  9. In the viewer, select the arrow to the left of Root to expand it.

    Screenshot of Root
  10. Expand IPM_SUBTREE.

    If you don't see IPM_SUBTREE, choose Top of Information Store or Top of Outlook data file.

    Screenshot of IPM_SUBTREE
  11. Right-click Inbox.

    Screenshot of Inbox right-click menu
  12. Select Open associated contents table.

    Screenshot of Open associated contents table
  13. Go to the Subject section, right-click IPM.Configuration.Autocomplete, and then choose Export message.

    Screenshot of right-click menu
  14. In the Save Message To File window, select the Format to save message dropdown arrow and choose MSG file (UNICODE).

    Screenshot of Save Message to File
  15. Select OK.

Save the MSG file somewhere safe. You can now exit MFCMAPI and use Outlook normally.

If you replace the NK2 file at another computer, replace the original by either matching the file name or deleting the one you no longer want. Then, place your new NK2 file there.