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[SOLVED] Outlook Auto Complete Not Working in 2024

If you’ve been having trouble with Outlook auto complete not working, don’t worry—I’ve got you covered with a simple fix.

So, here’s the scoop: Microsoft Outlook has this cool feature called the Auto Complete list, and it plays a role in making your life easier. It helps with automatic name-checking and completion when you’re typing away. The list, or as some call it, the nickname cache, basically keeps track of the email addresses, LegacyExchangeDN entries, and display names of the awesome people you’ve sent emails to before. It’s like your email memory lane!

So, every time you close and reopen Outlook, those helpful auto-complete suggestions vanish, right?

It seems like the culprit might be a corrupted auto-complete DAT file.


No worries, though—we’ve got some steps to fix this!.

Step 1: Create a backup of your Auto-Complete cache

  • make sure all Outlook and OWA sessions are closed for the user.
  • Next up, grab MFCMAPI from this nifty link and give it a quick install.
  • Fire up mfcmapi.exe like a wizard casting a spell.
  • Head to the Session menu and hit Logon.
outlook auto complete not working
  • Once you’ve got your profile name selected, hit that OK button.
outlook autofill email address not working
  • in the top pane, spot the line for the troubled mailbox and give it a satisfying double-click.
  • Navigate like a pro—expand Root Container, then Top of Information Store or IPM_SUBTREE on the left.
  • Right-click the Inbox folder, select “Open Associated Content Table.” Voila! A new MFCMAPI window with a treasure trove of properties awaits you.
  • Scroll down the rabbit hole to the Subject column and give a double-click to the item flaunting the subject “IPM.Configuration.Autocomplete.” Hunt down the one tagged with “0x7C09000A“.
  • Another double-click on that property reveals the secret sauce. Copy the data nestled under the Stream (Binary) section.
  • Open Notepad, paste your precious findings, and save that file.

Step 2: Eliminate the concealed auto-complete message

  • Launch mfcmapi.exe and, like a pro, hit Logon from the Session menu.
  • Select that perfect profile name and seal the deal with an OK click.
  • Now, in the top pane, spot the line that screams “affected mailbox” and give it a delightful double-click.
  • Expand like you’ve never expanded before! Left-side navigation is your playground—Root Container, then Top of Information Store or IPM_SUBTREE.
  • Right click the Inbox folder and choose “Open Associated Content Table.” A new MFCMAPI window, a realm of properties, unfolds before you.
  • Spot the treasure in the Subject column—the one with the majestic title “IPM.Configuration.Autocomplete.”
  • Right-click on it and, with a sense of purpose, hit “Delete message.”
  • In the drop-down list, pick the grand option—Permanent deletion (deletes to deleted item retention if supported). Then, click OK with the confidence of a superhero.
  • Now, let’s embark on a file-finding adventure! Navigate to %userprofile%\AppData\Local\Microsoft\Outlook.
  • Find the ROAMCACHE folder and rename it to ROAMCACHE.old, giving it a touch of vintage flair.
  • Ready for a run? Hit Start and summon the Run dialog.
  • Now, let’s spice things up—launch Outlook using the “Outlook.exe /cleanautocompletecache” switch. It’s like giving your Outlook a refreshing spa day.

Step 3: Transform the binary autocomplete data from the backup before importing it into Outlook

  • Feel the power as you force Outlook to take a breather—head to Send/Receive, and embrace the Work Offline mode.
  • Paste them into a shiny new email from Step 1. Excitement building, right?
  • Get ready for the magic shortcut: CTRL+K. Hit it like a maestro, setting the stage for connection.
  • But wait, don’t let it fly just yet! Click ‘Send’ with a grin, knowing it won’t go through because Outlook is in Work Offline mode.
  • Navigate to the Outbox and play the delete game—bid farewell to that almost-sent-but-not-quite email.
  • The grand finale! Close and launch Outlook.

Well, that was quite the troubleshooting adventure! I’m all geared up to fix Outlook auto complete not working now.

Also read:How to Use Search in Outlook to Find Emails Fast?

In conclusion, troubleshooting Outlook auto complete not working may seem like a wizardry adventure, but with the provided steps, it’s a manageable journey. From creating a backup to eliminating the concealed auto-complete message and transforming binary data, each step is carefully laid out. Remember to follow the guide with a touch of excitement and a grin, as you bid farewell to auto-complete woes.

For more Outlook wisdom, check out Microsoft’s website—your go-to gurus for Outlook mysteries.

Now, dear reader, what part of this troubleshooting journey caught your interest the most? Share your thoughts or questions in the comments below, and let’s keep the conversation flowing!

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