https://www.bleepingcomputer.com/news/microsoft/microsoft-investigates-global-exchange-admin-center-outage/ > Microsoft is investigating an ongoing outage that is blocking admins worldwide from accessing the Exchange Admin Center (EAC). > The company tagged this ongoing issue as a critical service issue tracked under EX1051697 on the Microsoft 365 Admin Center, and it says that "at this time appears to be a global issue."