Jan 17 2021 12:02 PM
On my computer, when I open Address book in Outlook 365 PC app and double click on a name, it opens the contact. To me, this is behavior as expected. However, on another computer I manage, when I do the same, it opens an un-editable card that says "Add to Contacts" and "Actions".
Jan 18 2021 09:04 AM
Next time you open the Address book dialog, check the selection under the "Address book" dropdown. The behavior will depend on what's selected there.
You cannot edit contacts stored in server-side address lists, such as the Global Address List, directly from within Outlook. You can only do so for contacts in your own Contacts folder.