Configuring preferences and options in Outlook on the web for business
Dear Dietrich Janssens,
Many thanks for the response!
I have done more research on this, but I didn't get any more information. Since this is happening in both the Windows app, the website in Chrome or in Edge; It is likely due to another error that needs further checking on the server backend, because our forum lacks relevant knowledge and permissions, so to better help you, please kindly try to create a service ticket in the Microsoft 365 admin center to support > service requests through navigation, as they have more access permissions than on this forum, and professional engineers will further help you.
Note: If you are not using admin account, please kindly ask your admin within your organization for help.
Thanks in advance for your understanding! Your patience and cooperation will be highly appreciated. Hope you all the best!
Sincerely,
De Paul| Microsoft Community Moderator