Microsoft (MSFT) Outlook Outage Peaks at 140,000 Reports Worldwide
Published on · Source: bbc.co.uk
AI Summary
Summarized by AI from the source belowMicrosoft (MSFT) experienced a major global outage affecting Microsoft 365 services, including Outlook email and its AI software Copilot. Around 140,000 users reported problems with Outlook globally by 18:00 GMT on Thursday, according to monitoring website Downdetector. The outage caused issues like inability to send or receive emails and disrupted calendar app functions. Some Teams services remained operational.
The outage affected users in 74 countries and impacted some tech companies like OpenAI and Anthropic, along with government agencies including the Singaporean government and Australia’s spy agency. Microsoft confirmed the cause was not a cyberattack but an "elevated load" on its servers, leading to many servers becoming unavailable and increasing traffic to remaining servers. Efforts to fix the problem have shown only "marginal success" as of Friday morning.
This outage matters because Microsoft 365 supports over 430 million users worldwide and is critical for business communication and services. Disruptions in these services can affect productivity and operations for companies and government agencies globally, highlighting the dependency on Microsoft’s online infrastructure.
Informational only, not financial advice. Content is AI-generated and may contain errors. How this works.
Our take
Opinion from the Newsstocks AI desk, not investment adviceThe outage reveals Microsoft's critical role in global business communications and the potential widespread impact of infrastructure failures. Although no cyberattack occurred, the elevated server load shows vulnerability in handling peak capacity. Recovery progress is slow, indicating possible further disruptions ahead.
Key numbers
- Peak Outlook problem reports
- nearly 140,000
- Microsoft 365 users worldwide
- more than 430 million
- Countries affected
- 74
What could hurt
- The outage disrupted email and calendar functions for millions of Microsoft 365 users.
- Continued server availability issues may prolong service disruptions and impact clients.
Questions readers ask
How many users reported issues with Microsoft Outlook during the outage?
About 140,000 users worldwide reported Outlook problems on Thursday evening, according to Downdetector.
What caused the Microsoft 365 outage affecting Outlook and AI services?
Microsoft stated the outage was due to "elevated load" on its servers, causing many to become unavailable, not a cyberattack.
Which companies and agencies were affected by the Microsoft outage?
Tech firms OpenAI and Anthropic, as well as government agencies from Singapore and Australia, reported being affected.
About Microsoft Corporation (MSFT)
Microsoft is a software and cloud-computing giant best known for Windows, Office, and its Azure cloud platform, and a leading investor in enterprise AI.
The Information Technology sector covers hardware, software and semiconductor companies driving the digital economy.
Earlier MSFT news
- Microsoft (MSFT) Global Outage Disrupts Millions, Impacts Markets and Airlines
- Microsoft (MSFT) Outage Disrupts Market Trading, Forces Phone Use
- Microsoft (MSFT) Outage Disrupts 365, Teams, Outlook, Copilot Services
- Anthropic Develops Spreadsheet Software; Microsoft (MSFT) Stock Insight
- Nasdaq Down 0.7% in November as Investors Shift to Defensive Stocks
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