Microsoft is experiencing a major global outage, impacting 365 services, including Outlook, Teams, Copilot AI, and more.

Some Microsoft customers, including OpenAI and Anthropic, have also reported issues.

The company said in a statement: "As of now, we are not aware of any malicious activity that is causing this incident. We will continue to treat this incident with urgency and priority until full resolution. Once mitigated, we will provide full details of the root cause, defense-in-depth repair items, and more within a Post-Incident Report."

It admitted that earlier attempted fixes were "not taking as expected" and that a large number of servers became "unexpectedly unavailable" due to "elevated load."

The outage has lasted over 12 hours.