Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Magdahamil
Good day and thanks for posting in Microsoft forum community, it's our pleasure to assist on the above query.
We do apologize for the inconvenience caused by the above issue, in the meantime to narrow down the issue, may we inquire below information to further troubleshoot the issue please.
-- Are you user Mac device please
-- Secondly are you able to open you excel or word document via outlook on the web browser outlook.office.com/mail/
-- To check whether the problem is related to your activation account, please go to the following website to check the subscription:
If you are using Personal account, please go here; If you are using Business account, please go here.
Thanks so much for your time and we look forward to your update regarding the above required information to further troubleshoot, have a great day and stay safe.