Microsoft 365 outage disrupts Outlook and Teams for users worldwide

Microsoft experienced a major outage of its Microsoft 365 services on Thursday evening, affecting hundreds of thousands of users globally. The disruption paralyzed access to Outlook email and the Teams communication app, with the company confirming infrastructure problems and working on a fix. Problems began just before 7:00 PM Polish time, with nearly 130,000 users simultaneously reporting Outlook issues at the peak. Many could not send or receive messages or load their inboxes, while access to Microsoft Teams was also blocked or severely hindered. Microsoft attributed the cause to unexpected server unavailability that overloaded remaining infrastructure, ruling out a cyberattack. The company stated services were partially restored in some regions, but full stability had not yet been achieved.