Microsoft Outlook Down: Thousands Hit by Email Outage as Users Unable to Send, Receive or Open Messages
Microsoft said it is working on Exchange Online after tens of thousands of users reported Outlook problems, including trouble receiving messages and logging in.
- 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.
29 Articles
29 Articles
A large-scale failure at Microsoft affected the email traffic of millions of users worldwide on Monday night. Both Microsoft 365 and private users of the Outlook email service were affected.
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A worldwide Microsoft malfunction affects the email traffic of millions of users. Outlook and Microsoft 365 are affected. According to the Group, the cause lies in the cloud infrastructure.
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HandelsblattHere you can find information on the topic "Cloud Service Disturbed". Read now "Worldwide Disturbed Microsoft Outlook Laps E-Mail.
An error with Microsoft Exchange Online causes email problems worldwide. What users should consider now and how Microsoft responds.
Outlook outage affects thousands; authentication issue noted
Multiple Microsoft Outlook outages disrupted email access for thousands of users worldwide, with Downdetector reporting surges in complaints and Microsoft acknowledging issues affecting Exchange Online as investigations continue. The episodes also highlight a notable gap between user-reported outages and official service status, with some impacts extending to broader Microsoft 365 services in certain reports. · 26 sources across the spectrum on …
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