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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

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, please 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.

Kutools for Outlook: Supercharge Outlook with over 100 must-have tools. Test drive it for FREE for 60 days, no strings attached!   Read More...   Download Now!

1. Click Kutools > SearchClear Search History.
doc 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


Tip: In this Video, Kutools tab is added by Kutools for Outlook. If you need it, please click here to have a 60-day free trial without limitation!

One click to enable Query Builder and easily search with multiple keywords in Outlook

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. 


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Comments (39)
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This comment was minimized by the moderator on the site
Hi this isn't working for me -- Outlook 2016 64-bit.
Yes, I made sure to close Outlook beforehand. No, I do not want to install Kutools.
This comment was minimized by the moderator on the site
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?
This comment was minimized by the moderator on the site
Hi Kate,
Have you restarted outlook after editing the registry form? Or you can try Kutools for Outlook’s Clear Search History feature!
This comment was minimized by the moderator on the site
Worked perfect, no more search history.!!!
This comment was minimized by the moderator on the site
close outlook first the do the above or it wont work
This comment was minimized by the moderator on the site
Information here is outdated and no longer applies. For example, 101f0445 is not in my registry.
This comment was minimized by the moderator on the site
It still works, make sure you close Outlook first before deleting the 101f0445 key and for good measure create these 2 registry entries, DisableServerAssistedSearch and DisableServerAssistedSuggestions.

See here: https://blogs.technet.microsoft.com/outlooking/2017/04/27/how-outlook-2016-utilizes-exchange-server-2016-fast-search/
This comment was minimized by the moderator on the site
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.
This comment was minimized by the moderator on the site
Worked like a charm for me.
This comment was minimized by the moderator on the site
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.
This comment was minimized by the moderator on the site
Yes, it works beautifully--to remove a very annoying feature. Just make sure that you close Outlook before beginning the steps indicated above.
This comment was minimized by the moderator on the site
Are you kidding me? Whats so annoying about this feature? Perfect for working a lot with mails..
This comment was minimized by the moderator on the site
It really is very annoying!
This comment was minimized by the moderator on the site
It works on Microsoft 2016. Thanks a bunch!
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