Microsoft is working to resolve a major outage in its cloud services that has affected tens of thousands of users around the world. Connectivity issues were reported in Microsoft 365 (primarily Exchange Online), Teams, Outlook, OneDrive, and the Copilot AI assistant.
Microsoft is working to resolve a major outage in its cloud services that has affected tens of thousands of users around the world. Connectivity issues were reported in Microsoft 365 (primarily Exchange Online), Teams, Outlook, OneDrive, and the Copilot AI assistant.
According to the BBC and CNBC, the outages began on Thursday, November 12. At the peak of the outage, monitoring service Downdetector recorded almost 140,000 complaints about the Outlook email client alone. According to preliminary data, there are no signs that the incident was caused by a cyberattack.
Microsoft said the outage was caused by an "unexpected unavailability" of some servers that were not undergoing automatic health checks. This put a critical load on the rest of the infrastructure. As a result of the incident, users in the US, Japan, Singapore and other regions lost access to individual files and calendar details, and the Copilot AI platform did not work correctly. However, messaging and video calls remained mostly available.
Over time, the company’s engineers found a way to solve the problem.
"We tested an alternative method of checking the health of services, thanks to which some servers are working again. We are now applying this change on a wider scale, and are also preparing automated recovery systems to continuously detect and restart unresponsive servers," the Microsoft 365 Status account on the X social network reported.
Amidst the Microsoft outage, Downdetector also reported outages for Amazon Web Services and Google. However, Amazon denied any technical issues of its own, saying that its services were “operating normally” and that the outage in other parts of the network was simply “causing some inaccurate news reports.”
Microsoft’s infrastructure issues have also affected the work of leading AI companies, including OpenAI and Anthropic. OpenAI said it is investigating a connection failure with Microsoft services that is causing some of its tools to function intermittently.
Україна може отримати додаткові 600 млрд грн для фінансування оборони та підвищення соціальних виплат
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