Microsoft faced a major global outage on Thursday, November 12, disrupting Outlook, Teams and other services. Thousands of users reported problems accessing emails and workplace apps. Many could not open their inboxes, send emails or receive messages.
Downdetector recorded more than 130,000 reports of Outlook problems in the United States around 1 PM ET.
The outage also affected Microsoft 365, Copilot and SharePoint. Businesses and government agencies across several countries reported service problems.
Microsoft said several of its servers unexpectedly became unavailable. This placed extra pressure on the remaining servers.The company found that a process responsible for establishing secure connections was becoming overwhelmed. This caused affected servers to stop processing requests.Microsoft said increased user traffic did not cause the problem. It also reported no signs of a cyberattack.
