It’s not just you: Massive Microsoft 365 outage affects Outlook, Defender, more [U: Fixed]

Update, 11:03 p.m. ET: Microsoft says it is still working on load balancing measures to fully resolve the issue. See details below.

Update, Jan 23, 6:58 a.m. ET: Microsoft confirms that the issue has been resolved.

Microsoft is investigating a widespread outage affecting several Business and Enterprise Microsoft 365 services, including Outlook. Here are the details.