Microsoft is working on an issue that may prevent users from connecting to Exchange Online and other Microsoft 365 services.
While the issue lasts, bookings, calendar synchronization and meeting room displays in our solutions may be delayed or show out-of-date information. This affects customers whose mailboxes are in Exchange Online.
The cause is on Microsoft's side, and you do not need to change anything in your setup. We are monitoring the situation and will check that bookings made during the disruption are synchronized once Microsoft has resolved the issue.
You can follow Microsoft's updates at
status.cloud.microsoft.