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How to clear or remove recent search history (search cache) in Outlook?

Have you ever noticed that when you typing keywords in the Instant Search box for searching, after finishing searching, all keywords you have typed are stored and listed in the Recent Searches drop-down list automatically as below screenshot shown? This article will introduce the solutions of clearing or removing this recent search history list.

Clear or remove recent search history or search cache in Outlook

Clear recent search history with Kutools for Outlook

Quickly clear all recent search cache by several clicks in Outlook

Comparing to deleting the specified registry key to clear all recent search history in Outlook, Kutools for Outlook releases the Clear Search History feature to help you quickly remove all search history with several clicks only! Click for 60-day free trial without limitation!
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arrow blue right bubble Clear or remove recent search history or search cache in Outlook

You can clear or remove the records of recent search history as follows.

1. On the desktop, press Win + R keys simultaneously to open the Run dialog box.

2. In the Run dialog box, type regedit in the Open box, and click the OK button. See screenshot:

3. In the popping up User Account Control dialog box, pease click the Yes button to go ahead.

4. Now the Registry Editor window opens. Please successively expand the key with one of below paths based on your Outlook version:
Outlook 2016/2013: HKEY_CURRENT_USER > Software > Microsoft > Office > 16.0 for Outlook 2016 or 15.0 for Outlook 2013 > Outlook > Profiles > profile name > 0a0d020000000000c000000000000046.
Outlook 2010/2007: HKEY_CURRENT_USER > Software > Microsoft > Windows NT > CurrentVersion > Windows Messaging Subsystem > Profiles > 0a0d020000000000c000000000000046.

Note: By default, the profile name is called Outlook if you haven’t changed your Outlook mail profile name. If you have changed it, please replace the profile name with the name you have used to change.

5. Now right click the 101f0445 key in the right window, and select Delete from the context menu. See screenshot:

6. The Confirm Value Delete dialog box comes out, please click the Yes button to go ahead.

7. Please restart your Microsoft Outlook. And now you will see the Recent Searches drop-down list is empty. See screenshot:


Clear recent search history with Kutools for Outlook

If you have Kutools for Outlook installed, its Clear Search History feature can help you quickly remove all recent search cache with several clicks only in Outlook.

1. Click Kutools > Clear Search History.

2. A Kutools for Outlook dialog will pop out and ask you to reconfirm. Please click the OK button to go ahead.

3. A second Kutools for Outlook pops out and reminds you to restart Outlook. Please click the OK button to close it, and then restart your Outlook.

And now you will see all recent search history are removed immediately.


Demo: clear recent search cache in Outlook

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Kutools for Outlook can help you enable the Query Builder in Advanced Find dialog box with only one click. Within the Query Builder tab, you can add multiple search keywords, and specify the logical relationship "AND" or "OR" amount these keywords.  Click for 60-day free trial without limitation!
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  • Auto CC/BCC by rules when sending email; Auto Forward Multiple Emails by custom; Auto Reply without exchange server, and more automatic features...
  • BCC Warning - show message when you try to reply all if your mail address is in the BCC list; Remind When Missing Attachments, and more remind features...
  • Reply (All) With All Attachments in the mail conversation; Reply Many Emails in seconds; Auto Add Greeting when reply; Add Date into subject...
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  • To post as a guest, your comment is unpublished.
    a · 7 days ago
    testtestestesttest
  • To post as a guest, your comment is unpublished.
    Kate · 1 years ago
    Question: The Recent Search History doesn't display anything anymore after following the instructions. But, when I put my cursor in the Search box it still automatically displays the keywords I used before. Can we still remove those?
    • To post as a guest, your comment is unpublished.
      kellytte · 9 months ago
      Hi Kate,
      Have you restarted outlook after editing the registry form? Or you can try Kutools for Outlook’s Clear Search History feature!
  • To post as a guest, your comment is unpublished.
    NEW_User_01 · 1 years ago
    Worked perfect, no more search history.!!!
  • To post as a guest, your comment is unpublished.
    pop · 1 years ago
    close outlook first the do the above or it wont work
  • To post as a guest, your comment is unpublished.
    Hmmm · 1 years ago
    Information here is outdated and no longer applies. For example, 101f0445 is not in my registry.
  • To post as a guest, your comment is unpublished.
    tulasi · 1 years ago
    This is not helfull article, i am tried to deleted the reg and restarted the outlook client still i can see the recent search history.
  • To post as a guest, your comment is unpublished.
    Clark · 1 years ago
    Worked like a charm for me.
  • To post as a guest, your comment is unpublished.
    Vanessa · 1 years ago
    Just wanted to say it didn't work right away for me. I had Outlook 2016 open while I did it the first time. Saw a comment to close Outlook first so I typed in some random numbers into the search and closed Outlook. Deleted 101f0445 again (after the search. Opened Outlook and no search history! Hoping this comment will help anybody reading these instructions now.
  • To post as a guest, your comment is unpublished.
    Jim D · 2 years ago
    Yes, it works beautifully--to remove a very annoying feature. Just make sure that you close Outlook before beginning the steps indicated above.
    • To post as a guest, your comment is unpublished.
      Jo · 2 years ago
      Are you kidding me? Whats so annoying about this feature? Perfect for working a lot with mails..
  • To post as a guest, your comment is unpublished.
    Ryn · 2 years ago
    It works on Microsoft 2016. Thanks a bunch!
  • To post as a guest, your comment is unpublished.
    The Unknown · 2 years ago
    Hi so i went into Windows NT, current version but there is no other folder called Windows subsystem. Why is this? I couldn't do it the first way either i do as follows and as soon as i click on office, outlook there is nothing in that.
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    T-600 · 2 years ago
    I am having the same problem. I really want to disable this annoying feature.
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    Idz21 · 3 years ago
    This works in Outlook 365 (2016), but only for the 'Recent Searches' drop-down. But the really annoying location where this list still shows up is in the standard e-mail search window. I still see the recent searches pop-up as soon as I click into the 'Search Current Mailbox (Ctrl+E)' text box. Is there a way to delete or disable that feature?
    • To post as a guest, your comment is unpublished.
      Steve · 2 years ago
      [quote name="Idz21"]This works in Outlook 365 (2016), but only for the 'Recent Searches' drop-down. But the really annoying location where this list still shows up is in the standard e-mail search window. I still see the recent searches pop-up as soon as I click into the 'Search Current Mailbox (Ctrl+E)' text box. Is there a way to delete or disable that feature?[/quote]

      I too have this same issue...how do you delete the search field for (Ctrl+E) options?
      • To post as a guest, your comment is unpublished.
        Avinash · 1 years ago
        Has anybody found solution to search suggestion on "Ctrl+E"? Irritating maximum, grrrr.
        • To post as a guest, your comment is unpublished.
          Tang Kelly · 1 years ago
          Hi Avinash,
          Have you restarted Outlook after removing the 101f0445 key in the Registry Editor window? Normally the introduced way will clear all search history from the Instant Search box (Ctrl + E).
          • To post as a guest, your comment is unpublished.
            Nico · 1 years ago
            Is it the small search box with the clock icon next to it ? 3 lines of previous searches with clock icon ?
    • To post as a guest, your comment is unpublished.
      T-600 · 2 years ago
      I am having the same issue. I want to disable that feature because it has gotten to the point that it is really annoying. Especially when I have to do several searches during the day.
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        Avinash · 1 years ago
        Please share if found a solution. Editing registry entry hasn't helped with "Ctrl+E".
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    Skippylaroo · 3 years ago
    ok, why the heck can't there be an easier way to do this without editing the REgistry? There should be an easy way to do it, or let us manually clear the ones we want to clear. Nice fail MS.
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    Alberto · 3 years ago
    Hi Team,

    Thanks for the great write up! I want to thank you guys big time, and I want to note in case it helps anyone else out there that the key in windows 10 outlook 2016 may be in a different location. I ran in to this same situation, the recent search autocomplete is very annoying and tends to get in the way of my workflow (i use a lot of keyboard shortcuts). In outlook 2016 the key is in a slightly different place, so if it helps anyone here is where I found the key based on the article information within my registry in windows 10 and outlook 2016:

    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\0a0d020000000000c000000000000046\101f0445

    I modified the value to erase all the data in the registry key after backing up the registry and the change worked immediately after restarting outlook.
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      Dany · 2 years ago
      Worked in Outlook 2016 with Windows 10
      Thank you!
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      Lysa · 3 years ago
      Please help! 101f0445 isn't on my list. Any suggestions?
      Thank you.
      • To post as a guest, your comment is unpublished.
        Linda · 1 years ago
        If you cannot find 101f0445, try closing Outlook first and then navigate to the path Alberto listed above within Registry Editor. It should appear after closing Outlook. After deleting 101f0445, the search history should be erased upon re-opening Outlook.
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    CoolRobG · 3 years ago
    The 2010 instructions worked in Outlook 2016 with Windows 10.
    Thanks for the post!
  • To post as a guest, your comment is unpublished.
    CoolRobG · 3 years ago
    This works in 2016 with Windows 10.
    Thanks for the post!
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    michell · 3 years ago
    it works for me outlook 2016, windows 10.. thanks for good info..
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    Thunder · 3 years ago
    Double confirm, works in Office 2016 in Windows 10
  • To post as a guest, your comment is unpublished.
    mo · 3 years ago
    Worked on my Outlook 2016, but I have to remove 101f0445 each time I open Outlook AND have to restart my computer. But at least we have this option.
    • To post as a guest, your comment is unpublished.
      Lysa · 3 years ago
      I need help. For some reason my outlook 2016 doesn't have 101f0445 on my list. Where did you find it?
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    maybeitsmaybelline · 4 years ago
    confirmed, works on Office 2016
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    raelene · 4 years ago
    Hi have windows 2010 and followed instructions and it didnt work, all that happened is 101f0445 is no longer visible in drop down list.
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    Adam · 4 years ago
    I can report as of the date of this comment's posting the procedure did work for me in Outlook 2010.
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      ray · 3 years ago
      don't work . still have unwanted search suggestions