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Microsoft email services gradually recover after worldwide disruption
Microsoft said a core authentication misconfiguration disrupted Exchange Online and other Microsoft 365 services, with more than 6,000 U.S. users reporting problems.
- On Monday, August 31, 2026, Microsoft Outlook experienced a widespread outage, with thousands of users reporting service disruptions; Downdetector began receiving reports just before noon ET, peaking at over 6,000 users by 12:15 p.m.
- The company identified an issue with an "authentication component" contributing to the impact, and Microsoft posted on its status account that it is applying a remediation strategy to a portion of infrastructure to test its efficacy.
- Downdetector data shows 38% of users reported issues receiving messages, while 24% faced app disruptions and 21% struggled with logging in; other Microsoft services including Microsoft Teams, Microsoft Store, and Microsoft Azur were also impacted.
- OpenAI users also reported service disruptions on Monday, with 90% of those users struggling specifically with ChatGPT; the official ChatGPT account on Twitter posted, "ChatGPT Work isn't working right now. Sorry about that, we're working on a fix!"
- Reports for both services began declining around 2:30 p.m. ET, though complaints about Microsoft Outlook remained as high as 4,382 reports just after 3 p.m., as Microsoft continues applying its solution broadly once efficacy is confirmed.
Insights by Ground AI
74 Articles
74 Articles
After an hour-long failure in Microsoft's e-mail services, the disruption is fixed according to the company's information.
·Germany
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Frozen mailboxes, no login, no emails: what is behind the global Microsoft failure – and what users should not do now.
·Munich, Germany
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With Microsoft's e-mail services, the situation is now relaxing again after a large-scale failure. On Monday evening, a massive disruption had paralyzed the mail traffic of millions of users worldwide.
·Vienna, Austria
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Millions of users can't log in to Outlook, send or receive emails for hours. An error in Exchange Online's cloud infrastructure causes interruptions worldwide. Meanwhile, the systems are gradually recovering.
Coverage Details
Total News Sources74
Leaning Left5Leaning Right14Center22Last UpdatedBias Distribution54% Center
Bias Distribution
- 54% of the sources are Center
54% Center
12%
C 54%
R 34%
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