Using older versions of Outlook for Mac in business environments
Hello Jim,
Happy New Year! I am really sorry to hear the news. I apologize for any inconvenience caused by installing the latest version of Outlook Client.
May I know if you have backed up your data to an .olm as I suggested in my first reply?
If so, you may try to create a new profile and add your account to the new profile, then you can refer to below article to import the .olm file to the new profile via go to the Tools tab and choose Import -> in the Import box, select the option “**Outlook for Mac archive file (.olm)**and click Continue.
For more detailed steps, please see:
Sorry again for the inconvenience, do let me know if you still need help. I'll try my best to help you.
Best wishes.