Fully restored after major failure; ``deeply apologizes'' to customers for confusion - Microsoft
Microsoft apologizes and explains it was not a cyber attack or AI rampage
Quick Look
- Microsoft announced that it has fully recovered from a large-scale failure in its business software "Microsoft 365." The outage occurred on the 12th, affecting services such as Outlook and Teams, and disrupted operations at public institutions and companies in more than 70 countries and regions around the world, including Japan's Government Solution Service (GSS).
- The cause was a change in the network after equipment reinforcement, and was not due to a cyber attack or AI going out of control.
AI-generated summary
Why It Matters
A large-scale failure occurred in the business software "Microsoft 365", disrupting operations at public institutions and companies around the world from the 12th to the 13th. In Japan, a failure occurred in the government's information system infrastructure, ``Government Solution Service (GSS).''
[Silicon Valley Current Affairs] On the night of the 13th (afternoon of the 14th Japan time), Microsoft (MS), the provider of the large-scale failure of the business software ``Microsoft 365'' that affected public institutions and companies around the world, announced that it had fully recovered. MS said on X (formerly Twitter), ``We deeply apologize for the confusion caused to our customers due to this issue.''
According to MS, the problem was caused by a problem that occurred during a past facility expansion, which surfaced due to recent network changes. The incident was not caused by a cyber attack or artificial intelligence (AI) going out of control.
The major outage occurred on the 12th. Although the situation was gradually restored, problems continued in some services and areas on the 13th. Correspondence and confirmation work continued. MS will publish a report once the investigation into the failure is complete.
The outage affected a number of services, including the email software ``Outlook'' and the business chat software ``Teams,'' causing problems such as the inability to send and receive emails. According to the system failure information site Down Detector, the impact spread to more than 70 countries and regions.
Business operations were disrupted at public institutions and companies around the world. In Japan, the impact was widespread, with failures occurring in the government's information system infrastructure, ``Government Solution Service (GSS).''
What to Watch
AI outlook — possibilities, not facts
Microsoft releases investigation report on failure
Likely · Within weeks
Open Questions
- Accurate scale of damage and economic loss due to failure
- Detailed content and timing of the investigation report published by Microsoft
- Specific scope of impact of GSS failure and recovery status


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