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Microsoft 365 Outage Affects North American Users for Nearly 10 Hours

Microsoft 365 Outage Affects North American Users for Nearly 10 Hours

First seen 23 Jan 2026, 22:10 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

Microsoft 365 experienced a significant outage affecting services like Outlook, Defender, and Purview. The issue began at 1937 UTC, impacting users' access to emails, files, and meetings due to a malfunctioning portion of service infrastructure in North America. Microsoft is working to restore the affected services.

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