Archive Manager Search Exporter - Outlook Error

I used to be able to run Search Exporter on my old desktop. Since my machine was replaced, I am getting these errors:

"Either there is no default mail client or the current mail client cannot fulfill the messaging request. Please run Microsoft Outlook and set it as the default mail client"

When I click ok, i get another message saying "Mailed to create MAPI session. Verify that Outlook is installed and configured correctly"

I am running Outlook 365 Pro Plus. It is set as the mail client default and works correctly. 

Am I missing something here?