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Microsoft 365 outage disrupts Outlook, SharePoint, Teams, and Copilot

Original title: Worldwide Microsoft 365 outage disrupts Outlook, SharePoint, Teams, and more

Malwarebytes Labsby @MetallicaMVP ()2 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 attributes the disruption to servers failing health checks and has given no full-restoration timeline.

A widespread Microsoft 365 outage that began Thursday, November 12, continued into Friday and disrupted Outlook, SharePoint, Teams, and Copilot. Downdetector received reports from 74 countries within about an hour, after problems first reported for Exchange Online in the Americas spread further. Microsoft executive Charles Lamanna said there was no sign of malicious activity. Some servers failed automated health checks, and recovery has been only partial.

Unconfirmed: Microsoft says there is no indication of a cyberattack, but the underlying cause is still under investigation.

Key facts
  • CNN reports effects on businesses, schools, and government services, including in Australia.
  • Restored servers later became unresponsive again when traffic returned.
  • Defender XDR and Defender for Office 365 are listed among services that may be affected.
  • Microsoft is posting updates on its service status page and its Microsoft 365 Status account on X.
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From the original article

2 min read at malwarebytes.com

A worldwide Microsoft 365 outage is having a severe impact on companies that rely on services like Outlook, Sharepoint, and Teams.

Malwarebytes Labs

By @MetallicaMVP · malwarebytes.com

Read the full article at Malwarebytes Labs

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.