Hi,
Office 365 is currently not supported in the Q&A forums, the supported products are listed over here https://learn.microsoft.com/en-us/answers/products (more to be added later on).
You can ask the experts in the dedicated Office 365 forum over here:
https://answers.microsoft.com/en-us/msoffice/forum/msoffice_o365Admin
Also something here may help:
https://answers.microsoft.com/en-us/msoffice/forum/all/disabling-multi-factor-in-outlook-365/1d34c0ad-7d2c-4fbe-a51f-a9c06e0938d9
(Please don't forget to accept helpful replies as answer)
Best regards,
Leon