Organizing and accessing contact information in Outlook.com
Hi Kevin,
I'm sorry for the trouble you are experiencing. I appreciate your patience in this matter.
It seems to be that it's trying to export iCloud contacts only.
Can you check the article below and confirm that you are following all the steps?
https://support.microsoft.com/en-us/office/expo...
If this is not working, can you please check if you can follow the steps to export Contacts from Office 365 on the web:
https://help.zolasuite.com/portal/en/kb/article...
Note: The last link is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
I hope it helps, but please let mw know if you need anything else.