Qz Widespread Microsoft 365 Outage Disrupts Global Services
Article Content
- •Microsoft 365 outage affected Outlook, Teams, and Copilot services globally.
- •Over 130,000 users reported connectivity issues, initially in the Americas.
- •The outage coincided with an actively exploited Outlook vulnerability, CVE-2026-124194.
On November 12, 2026, Microsoft experienced a significant outage affecting its 365 services, including Outlook, Teams, and Copilot, due to a large number of servers becoming unexpectedly unavailable. Initially reported in the Americas, the outage quickly spread globally, impacting users' ability to access Exchange Online mailboxes and other services. Over 130,000 users reported issues on Downdetector, with connectivity errors persisting across multiple connection methods. Microsoft attributed the problems to elevated load on remaining infrastructure, not increased traffic, and began implementing fixes. The incident coincided with reports of an actively exploited vulnerability in Outlook, identified as CVE-2026-124194, although no direct link between the two has been confirmed. Microsoft is actively working to restore services and has paused all deployments to mitigate further issues.
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