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Microsoft 365 outage hits Outlook, Teams, and Copilot into a second day

Original title: The Microsoft Outage Is a Warning for the World

WIRED · Securityby Lily Hay Newman, Matt Burgess ()6 min read
Part of a story covered by 17 sourcesMicrosoft 365 mostly restored; phishing exploits the outageMerged summary & timeline
AI summary · x-ai/grok-4.7Summaries by Vani AI

Microsoft blames unavailable servers and failed health checks, not a cyberattack, as recovery remained uneven.

A Microsoft 365 outage affecting Outlook, Teams, and Copilot continued into Friday after overnight fixes failed to resolve it. Microsoft said servers were unexpectedly unavailable, straining remaining machines, and that it was testing a configuration change for failed automated health checks. It repeatedly said there was no indication of a cyberattack and had not identified a recent change correlated with the start. Schools, courts, governments, police, health services, and businesses in Asia, Australasia, and Europe reported disruption; Microsoft later reported sustained availability improvements.

Unconfirmed: Microsoft has not identified the root cause and says a cyberattack is not indicated.

Key facts
  • Microsoft said elevated load was not from increased traffic.
  • UK police could not take online crime reports; emergency phone lines stayed up.
  • NHS 111 and 999 staff could not refer patients normally, a union said.
  • Deutsche Bahn said email outages severely restricted sending timetables.
  • Microsoft had 223,000 employees on June 30, down from 228,000 a year earlier.
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From the original article

6 min read at wired.com

Countless businesses, schools, hospitals, and governments have found out the hard way what it means to rely on a single company’s systems to get things done. And next time could be even worse.

WIRED · Security

By Lily Hay Newman, Matt Burgess · wired.com

Read the full article at WIRED · Security

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.