Microsoft Outage Forces Japanese Markets To Dust Off Fax Machines

What happened

A 12-hour global Microsoft 365 outage disrupted financial hubs and affected services including Exchange Online, Teams, Outlook and Copilot. Japanese FX brokers said customers could miss login and trade-execution emails, while some brokerages could not handle email inquiries; trading desks resorted to manual workarounds.

Confirmed

Global impact / market context

When brokers cannot reliably send login or execution messages, customers may struggle to access accounts or confirm trades, while manual workarounds can slow operations. That can increase customer-service costs and settlement risk for brokers, though the article gives no measured financial losses.

Analyst inference

The reported disruption reached international financial hubs and affected retail foreign-exchange brokers in Japan, with reports of delays at brokerages in Singapore and India. This highlights reliance on Microsoft 365 for communications, but the article does not quantify broader market effects or lasting damage.

Analyst inference

What to watch

1. Whether Microsoft restores Exchange Online, Outlook, Teams and Copilot fully, and whether the outage ends without further service interruptions for financial firms and their customers. Analyst inference
2. Whether Japanese brokers report missed login or execution messages, delayed settlements, or continued limits on customer inquiries after email service returns. Analyst inference
3. Whether brokers disclose added operating costs or customer losses from manual workarounds; the article reports disruption but provides no financial impact figures. Analyst inference

Evidence

• financemagnates.com