Why does an address in my contacts not show up in auto-complete when composing an email?

Question

Hi, I'm having an incredibly frustrating day due to Outlook, and now this edit box that I'm trying to use to describe my problem (which seems to be very easy to get into a bad state if you accidentally click the "code block" button). I am retyping my message.

I added a contact to my address book, and Outlook for Mac does not show it when I try to add this person as an email recipient, whether it is in the To field or the CC field, whether I search by name or email, and also the same problem seems to exist on the Outlook Web app.

This seems like a basic thing for an email client to be able to do. I've tried deleting and re-adding the contact multiple times, and it doesn't make any difference.

I can type out the full email address, although it seems impossible if I want to use the address format which includes the person's title, which is quite useful when making introductions to people.

Thank you for your attention.

Answer 1

Hi Aaron Sokoloski

Thank you for posting your question in Microsoft Q&A and sharing your experience with contact visibility in Outlook. I understand how it can be frustrating when a contact you've added doesn't appear as expected while composing an email, and I appreciate your patience as we look into this together.

In Outlook (both Web and Mac versions), the autocomplete feature typically suggests contacts based on your previous interactions such as emails you've sent or replied to rather than pulling directly from your address book. This means that newly added contacts may not immediately appear in the suggestion list unless there has been some prior communication.

To help ensure the contact becomes visible in autocomplete, you might consider sending a quick email to that address. This often prompts Outlook to recognize and remember the contact for future suggestions.

Additionally, it may be helpful to double-check that the contact is saved under the correct account, especially if multiple email accounts are connected to Outlook by review in the "People" / "Contacts" view in Outlook. On the left-hand navigation pane, you might see folders under your business account and potentially a section called "On My Computer". So, please ensure the new contact was saved under your business email account's "Contacts" folder, not in an "On My Computer" folder. Contacts in the local folder will not sync to the server or the web app.

Outlook’s autocomplete feature tends to prioritize contacts you've previously interacted with, rather than pulling directly from your address book. This behavior can sometimes lead to confusion, especially when a newly added contact doesn’t show up immediately.

Additionally, to better understand your behavior, I tried testing this on both my Mac and Windows devices. On Windows, I noticed a feature that allows managing suggested contacts more directly (Show AutoComplete suggestions), while on Mac, this option doesn’t seem to be available. This difference might be contributing to the inconsistency you're experiencing.

I’ve also come across a discussion on the Microsoft Tech Community where several users have reported similar experiences. It seems this behavior might not be isolated and could be related to how Outlook currently handles contact suggestions across platforms.

Outlook for Mac - Version 16.99 (25071321) - No Address Book | Microsoft Community Hub

However, I also found the work-around you can try that manually Trigger the Address Book. When you compose a new email, instead of just typing in the "To" field, you can click to the address book icon to open the full Address Book search window. (on New Outlook)

If you find them this way, select them, add them as a recipient, and send the email. This action often forces the contact into the auto-complete list for future use.

In case none of the steps I suggested are able to resolve your concern, you can consider raising this issue via Contact support within Outlook for Mac - Microsoft Support, Microsoft product teams can acknowledge this misconfiguring and active to fix it as soon as possible. 

I hope this information proves helpful, and I appreciate your understanding. And of course, if you have any further questions, feel free to let me know via comment section.

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