Microsoft 365 Outage Forces Japanese Businesses Back to Fax Machines

November 14, 2026 Rachel Kim – Technology Editor Technology

Old-school fax machines and landline phones kept operations running across Japan this week after a massive Microsoft 365 outage knocked out essential cloud infrastructure.

The Tech TL;DR:

  • Microsoft 365 cloud services including Outlook, Teams, and SharePoint experienced a major global and regional disruption.
  • Japanese government operations and commercial businesses lost primary communication channels, forcing a reliance on analog backups.
  • Redmond reported ongoing server instability more than 24 hours after the initial failure, with no ETA for full recovery.

The service failure began on Thursday morning, blocking users from accessing Outlook, Word, Excel, PowerPoint, Teams, and Copilot. Xbox users also faced sign-in failures, long queue times for cloud saves, and disruptions to Xbox Cloud Gaming.

Microsoft 365 outage disrupts Outlook email access, company says — KPRC 2 Click2Houston

Masanao Ozaki, Japan’s Deputy Chief Cabinet Secretary, confirmed that the nation’s shared IT backbone went down, disrupting critical government operations. Workers across the country scrambled to find analog workarounds as businesses without fallback plans ground to a halt.

“I guess phones and fax machines really are unbeatable … we’re going full analog,” a Japanese social media user posted after dusting off legacy equipment, as reported by TechSpot.

Japan government's IT infrastructure is hit by the Microsoft outage — Associated Press

While traders and business owners reported financial losses and severe productivity drops, some employees experienced unexpected downtime. One worker described calling his boss in a panic before being told to take the day off because zero cloud tools were working. Another person said that the only thing they did all day was to clean the coffee machine.

Microsoft initially said that it had resolved several issues before reporting that restored servers were inexplicably going offline again. The company’s Health Status website confirmed that Business and Enterprise users remained unable to connect to multiple services.

Microsoft 365 suffers global outage — Nippon Television News Japan

Microsoft 365 Business and Enterprise users “may be unable to connect to multiple Microsoft 365 services” at this time, and the company “does not have an ETA for full recovery,” according to the status update.

Always consult with certified IT and cybersecurity professionals before altering enterprise networks or handling sensitive data.

Widespread outage disrupts Microsoft 365, Outlook email services — ABC7

Keep reading