Using Outlook for iOS in business environments for email and scheduling
Hi, thanks for reaching out, I'm here to help.
Right now, it looks like Outlook is experiencing a temporary service interruption, and Microsoft is aware of it. You can check the official Microsoft Service Health page for updates here.
https://portal.office.com/servicestatus.
https://portal.office.com/servicestatus/
Thanks for understanding.
Regards,
Richard R.