Microsoft 365 outage disrupts businesses and governments in over 70 countries

Highlights

Microsoft outage affects 70+ countries.
Outlook, Teams, and Copilot are disrupted.
About 200,000 user reports were recorded.

According to Bloomberg, the disruption generated approximately 200,000 user reports on Downdetector, while attempts to restore affected systems produced mixed results. Microsoft shares fell 0.4% in extended trading as the company worked to stabilize its infrastructure.

Microsoft struggles to restore affected services

The outage began around midday Thursday on the U.S. East Coast, initially affecting users in the Americas before spreading internationally. Outlook, Microsoft Teams, SharePoint, and the Copilot artificial intelligence assistant were among the affected products, alongside administrative tools and other Microsoft 365 services.

Microsoft identified an overloaded core process on affected servers that caused systems to stop responding and reduced available capacity. Engineers attempted to restart infrastructure and redirect traffic away from malfunctioning servers, but those measures did not consistently restore access.

Early Friday, the company reported improvements in some server segments before acknowledging that subsequent recovery efforts had failed to deliver the expected results. Microsoft continued investigating the unexpected increase in traffic and indicated that it had found no evidence of malicious activity.

Businesses and governments face widespread disruption

The outage affected organizations that depend on Microsoft software for daily communications, including hospitals, universities, schools, and financial institutions. U.S. vehicle manufacturer Workhorse Group postponed its earnings announcement, while some businesses sent employees home because essential systems remained unavailable.

At apparel company PVH, technical problems reportedly interrupted planned discussions with employees about workforce reductions. The company had announced plans to eliminate approximately 4% of its global workforce, leaving some affected staff uncertain about their employment status.

In Japan, the Finance Ministry experienced email disruptions for much of Friday, forcing government departments to distribute schedules through paper notices. Traders in Singapore and brokerages in India also reported problems, while Australia's central bank experienced Outlook failures without interruptions to critical operations.

New Zealand immigration authorities suspended visa application processing because of the outage. Australian businesses also reported difficulties printing invoices, and some schools were unable to conduct online lessons.

Prolonged outage exposes dependence on Microsoft 365

The incident highlights the operational risks facing organizations that rely on a single technology provider for email, collaboration, and administrative systems. Microsoft 365 is widely used across corporate, government, and educational networks, allowing technical failures to affect multiple essential functions simultaneously.

Although new disruption reports slowed, services had not been fully restored in the latest updates described in the supplied reports. With approximately 200,000 user reports and disruptions spanning more than 70 countries, the outage ranks among Microsoft's most significant recent incidents.

We also reported Microsoft winds down Oracle AI cloud capacity deal amid partnership review.

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