Microsoft outage: Outlook and 365 recovery efforts continue globally

Microsoft is working to resolve a global outage affecting Outlook, Microsoft 365, and other services that has disrupted users worldwide for most of Thursday, with recovery efforts ongoing. The company identified a process on affected servers responsible for establishing secure connections that became overwhelmed, causing servers to stop processing requests. Microsoft is validating a configuration change and reverting a recent network change that correlates with the start of impact. Microsoft reported partial recovery in some regions but said it has not been sustained, and it is implementing temporary traffic limitations in specific locations while monitoring server stability before gradually reintroducing additional traffic.