Microsoft is investigating an ongoing outage preventing users and admins from accessing some Microsoft 365 services and the admin center. [...]
source https://www.bleepingcomputer.com/news/microsoft/microsoft-investigates-microsoft-365-outage-affecting-users-admins/
source https://www.bleepingcomputer.com/news/microsoft/microsoft-investigates-microsoft-365-outage-affecting-users-admins/