Microsoft 365 users across North America endured a prolonged, high-impact disruption on January 22–23, 2026, as core services including Outlook, Exchange Online, OneDrive, Microsoft Defender, and Microsoft Purview were intermittently unavailable or sluggish for nearly ten hours whatile engineers...
Microsoft's cloud productivity ecosystem experienced a significant service disruption on January 22, 2026, with widespread user reports and official alerts indicating degraded or unavailable access to core Microsoft 365 services — most notably Outlook / Exchange Online, Microsoft Defender /...