GoKawiilMicrosoft outage knocks out Outlook, Teams, Copilot and Defender for 18 hours
A Microsoft cloud outage that began Thursday with Outlook email and Teams disruptions spread globally, eventually affecting Copilot AI tools, Defender security software, Intune admin dashboards, and cloud-hosted Windows PCs. Microsoft said the problem involved a large number of servers becoming unexpectedly unavailable and that services began recovering roughly 18 hours later, according to internet traffic monitoring firm Kentik.
GoKawiil's interpretation of the reporting above, not reported fact.
The breadth of services hit—spanning email, security tools and device management—shows how deeply interconnected Microsoft's cloud infrastructure has become, meaning a single server-level failure can ripple across unrelated products worldwide. Microsoft says it found no evidence of malicious activity, but the company has not yet disclosed a root cause, leaving open questions about resilience in its data centers that enterprise customers rely on for core operations.
- Outage began Thursday, initially appeared US-focused, then spread globally within hours
- Affected Outlook, Teams, Copilot, Defender, Intune and cloud-hosted Windows systems
- Recovery took about 18 hours; Microsoft says no evidence of malicious activity, cause still under investigation
Source: techcrunch.com — Zack Whittaker, 2026-11-13
Published there as: “Microsoft’s latest email outage turned into a full blown global cloud crisis”
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