How to clear Outlook 365 Mail Auto-Complete

[Mike Bailey]

I have tried all recommendations:

- File > Options > Mail > "Empty Auto-Complete List"

- Delete NR2 file: I don't have one

- Edit Registry: I don't have the key

It's a useful feature, but useless now as it's cluttered up with outdated emails.  Thanks.

[#2]

Have you tried closing Outlook, then opening it again with the switch below?

Outlook.exe /CleanAutoCompleteCache

[#3]

To confirm, are you using Outlook on the Web, or Outlook desktop?

[#4]

Type ahead cache is stored server side now with exchange online. I found this article to clear it however not sure if there is a newer one since but it should give you a place to start. https://gallery.technet.microsoft.com/office/How-to-reset-OWA-auto-5b2b3d3b

[#5]

Yes, I tried the "/Clean..." switch.  This is Outlook 365 on the desktop; Win 10 x64.  Will check that link.  Thanks.

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@Deleted wrote:
Type ahead cache is stored server side now with exchange online. I found this article to clear it however not sure if there is a newer one since but it should give you a place to start. https://gallery.technet.microsoft.com/office/How-to-reset-OWA-auto-5b2b3d3b

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[#6]

That script appears to remove individual email addresses from AutoComplete.  How do I remove ALL email addresses?

[#7]

It looks like it iterates through all the emails and removes them. Assuming there is no all switch. Did you mean for all users?

[#8]

HI Mike

Could you confirm if you are trying to clear auto complete cache for one user or all users in your tenant. If it is only for one user I would recommend try to clear it using MFC Mapi. Refer to the below article.

http://www.enowsoftware.com/solutions-engine/bid/184025/Clearing-AutoComplete-and-other-Recipient-Ca...

Thanks

Robin Nishad