It also contains tips for using your Mac contacts with Outlook.
Instructions in this article apply to Outlook 2019 for Mac and Outlook 2016 for Mac.
Here’s how:
OpenContactsorAddress Book.
If you don’t want to export the entire list, opt for contacts you want to export.
Go toFile>Export>Export vCardor dragAll Contactsfrom theGrouplist to your desktop.
If you don’t see All Contacts, selectView>Show Groups.
end the open Contacts window and open Outlook.
Drag and drop theAll Contacts.vcffile from the desktop (created in Step 2) to theAddress Bookroot category.
double-check the Plus (+)sign appears as you hover the file over the Address Book category.

Delete the VCF file from your desktop or copy it elsewhere to use it as a backup.
Use the ABBU format to import the contacts back into a macOS app.