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Microsoft struggles to get M365 services back online after widespread outage
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Fusion42 · 13 November 2026 · Fusion42 review
Microsoft 365 suffered a widespread outage starting November 12, impacting Exchange Online, Outlook, Teams, SharePoint, Copilot, and security services, with recovery efforts hindered by server unavailability and traffic rebalancing. The incident highlights risks of operational dependency on a single cloud provider for critical enterprise communication and collaboration tools.
This Wire brief sits within Fusion42's coverage of Enterprise Software, and 56 sources have reported it between 12 Nov 2026 and 13 Nov 2026.
◆ ◆ The Wire takeaway
You must reassess your dependency on Microsoft 365 for critical enterprise functions as this outage shows a single cloud failure can halt your email, meetings, and security operations all at once. Plan now for multi-cloud or backup strategies to avoid being entirely offline during similar disruptions.
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56 sources · first reported 12 Nov 2026 · latest 13 Nov 2026
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