
Microsoft has addressed the root cause and continues recovery efforts in some regions
AI-generated summary
The large-scale failure of Microsoft 365 affected public institutions and companies around the world. The failure was caused by a problem that occurred during a past facility expansion, which surfaced with recent network changes.
[Silicon Valley Current Affairs] As of the 13th, the large-scale failure of Microsoft 365, Microsoft's business software group, which affected public institutions and companies around the world, is being repaired as of the 13th. On the morning of the 13th (early morning on the 14th Japan time), MS stated on X (formerly Twitter), ``The root cause (of the failure) has been addressed,'' and is continuing to respond to customers and regions where the failure continues and to confirm the recovery status.
Microsoft's large-scale outage remains unresolved, and even after some recovery, problems continue, affecting more than 70 countries
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.
MS said, ``We deeply apologize for the confusion caused to our customers due to this issue,'' and indicated that they will release a report once the investigation into the problem is complete.
AI outlook — possibilities, not facts
Microsoft releases investigation report on failure
Likely · Within weeks

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.
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Due to a large-scale failure at Microsoft in the US, email and AI functions became unusable at local governments and medical institutions in Japan. Business operations have been disrupted in Kumamoto City, Osaka City, and medical institutions, and with no prospect of recovery in sight, confusion is spreading, including switching to telephone support.