Hey there!
Nice to meet you! I'm Darhyl, an Independent Advisor.
Unfortunately, a lot of users were also complaining about the same error recently.
There seems to be an issue with the server at the moment: https://portal.office.com/servicestatus/
It would be best to wait a few hours and check the server status from time to time.
Thank you for your kindness and understanding! Please feel free to let me know if you need anything else.
Best Regards,
Darhyl