Edit auto-complete list in Outlook 2016+/365?


New Member
Outlook version
Outlook 2016 64 bit
Email Account
Office 365 Exchange
While composing a message, when I start typing an address, I see some auto-complete suggestions, either under Recent people, Suggestions, or Other suggestions. If I want to delete a suggestion from Recent people, I can via Del key or hitting x at the right of the suggestion, but I don't see a way to remove a "suggestion" or "other suggestion." Earlier OL versions used an NK2 "nickname" file that utilities like Nirsoft NK2edit can show and modify, but I understand that OL 2016 can import an .nk2, it now stores auto-complete info elsewhere (C:\Users\username\AppData\Local\Microsoft\Outlook\RoamCache\Stream_Autocomplete_0_[32 hex digits].dat). I also understand the Outlook Web App maintains a separate auto-complete list, and that some mailboxes (not mine) have a Suggested Contacts folder in the Folder list that's used.

How do I remove bogus "suggestions" and "other suggestions" (from earlier typos?) from my Outlook auto-complete list? (I run OL 2016/365 64bit on Win10 Pro.)

Thank you. *j

James R. Celoni
Los Angeles