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Microsoft 365 outage drags on, but things are improving
Microsoft’s multi-day Microsoft 365 outage affecting Outlook email and other services remains unresolved as of Tuesday, with the company reporting ongoing mitigation progress but not full restoration. The disruption, now entering its second day, stems from a core authentication configuration issue in Exchange Online that caused email delays, failures, and authentication problems for some Outlook users. While Microsoft made significant progress on Monday, its latest update on X states that “mitigation actions are continuing to progress,” indicating the service is not yet back to normal. The outage extended beyond Outlook to impact SharePoint, Copilot, Teams, Purview, Defender XDR, the Microsoft 365 Admin Center, and Universal Print, all attributed to a misconfiguration preventing authentication components from deploying as expected to a portion of infrastructure. Microsoft reviewed recent changes, tested mitigations, and rolled out fixes, leading to “gradual recovery” in mail flow by Monday evening. However, search functionality remained degraded until early Tuesday, when improvements were noted. As of Tuesday morning, Microsoft says telemetry indicates positive trends and service availability is improving, but the company has entered a period of extended monitoring to ensure full resolution. Users seeking Microsoft 365 outage status updates should expect continued gradual recovery rather than an immediate fix.