Good day! Thank you for posting to Microsoft Community. We are happy to help you.
As per your description, it seems that you want to run Office 365 app on your Mac OS Catalina 10.15.7. In Mac OS Catalina 10.15.7. the October 2022 update (16.66) is the last build of Office to support macOS Catalina 10.15.
You can install this installer Install package Office suite (with Teams) and use it to install Microsoft Office 2019/Office 365 package (the version 16.66).
Also, you can download the installer version 16.66 from this page: Update history for Office for Mac install Office package with the same version as well.
Appreciate your patience and understanding and thank you for your time and cooperation. Hope you have a great day!!
Sincerely,
Mia
• Beware of Scammers posting fake Support Numbers here.
3 people found this reply helpful
·
Was this reply helpful?
Sorry this didn't help.
Great! Thanks for your feedback.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.