Office 365 Monitoring: Microsoft 365 Admin Center Outage Jan. 5, 2021
On January 5, 2021, at ~3:00 pm UTC, Microsoft reported an issue affecting users in the UK that may be preventing them from accessing the Microsoft 365 admin center.
Roughly 2 hours later, they confirmed that a portion of their processing infrastructure wasn't handling requests as expected and that they were repairing the problem to restore service access for affected users.