Using Classic Outlook on Windows for personal email, calendar, and contact management
I asked Microsoft tech support if there was an update for Exchange online that took place on 10 November 2022.
This is the response :-
Hi Lia,
The update is not from Exchange Online itself but from the Office application update/patches.
The issue you are encountering is only happening on Outlook and not from the Web. This is a local Outlook occurrence.
Lia