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Developing story: The Microsoft 365 outage and the AI tools that depend on it

Microsoft says it fixed the issue behind its two-day Microsoft 365 outage

Microsoft says it fixed the issue behind its two-day Microsoft 365 outage
Image: PYMNTS

Microsoft blamed a technical issue, not a cyberattack, AI or agents, and promised a full post-incident report once its review ends.

Source: PYMNTS

Microsoft said in a post on X on Friday, November 13, that it is "seeing broad recovery and stability" across its services after a disruption that began Thursday, November 12. "We have addressed the underlying issue and continue to restore service to remaining customers and regions," the company said, according to PYMNTS. Microsoft said the cause was a technical issue unrelated to a cyberattack, AI or agents, and that it restored services gradually to validate stability, which took longer. It said a full post-incident report will follow its review.

Bloomberg reported that Outlook, Teams, Copilot and other Microsoft tools were affected. According to PYMNTS, citing a Bloomberg report, people in more than 70 countries have reported problems, and users began reporting issues around 1 p.m. Eastern on Thursday. Eastern on Thursday, Microsoft warned users they may still see errors, and the M365 bundle has more than 450 million commercial users.

Reuters reported that people turned to telephones, faxes and Bluetooth to cope with the loss of email. PYMNTS reported that firms told employees to use the phone, added capacity to teams to handle the extra workload, reminded staff not to use unauthorized channels and urged customers to verify unexpected communications. PYMNTS also reported that the outage broke connections that let other firms' AI assistants work with Microsoft 365.

Read the full article at PYMNTS

Our take

When email, Teams and the AI assistants connected to them go down together for two days, customer service and order operations lose their main channels at once.

  • Read Microsoft's post-incident report for the root cause and any changes it commits to.
  • Write a fallback plan for customer contact, including how customers can verify messages during an outage.
  • Check which AI tools depend on Microsoft 365 connectors.

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Key takeaways

  1. Microsoft says a technical issue, not a cyberattack, AI or agents, caused the outage
  2. PYMNTS reported problems in more than 70 countries
  3. M365 has more than 450 million commercial users, per PYMNTS

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Illustration for The Microsoft 365 outage and the AI tools that depend on it
Illustration: Digital Influence

Developing story5 postsUpdated Nov 13

The Microsoft 365 outage and the AI tools that depend on it

Microsoft 365 services including Outlook, Teams and Copilot have been disrupted since November 12, 2026.