Japanese companies and government institutions experienced widespread disruptions following a global Microsoft outage that affected services such as Outlook, Teams, and Copilot.
The disruption forced workers to reschedule meetings and pause routine business operations as they encountered error screens on Friday morning. According to The Japan Times, several firms saw their day-to-day work entirely interrupted by the system failure.
One Japanese worker posted on X that their employer instructed them to stay home after they could not log into their corporate Outlook email. The incident highlighted Japan's deep reliance on Microsoft's digital infrastructure.
A 2025 survey by Keyman's Net revealed that over 78% of Japanese companies rely on Microsoft software products for daily operations. Friday's outage underscored the systemic risks associated with widespread dependence on a single technology provider.
Japan's Deputy Chief Cabinet Secretary Masanao Ozaki confirmed that government information systems experienced disruptions. Financial institutions such as Credit Saison and major academic centers including Kyushu and Waseda universities also reported technical delays.
With digital document sharing and emails inaccessible, multiple workplaces reverted to using traditional fax machines and analog phone lines to keep critical operations running smoothly amid the ongoing global failure.
Source: The Japan Times
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