A major outage affecting Microsoft's Outlook, Teams, and other Microsoft 365 platforms has left millions of users offline across more than 70 countries for more than 12 hours, causing operational havoc in critical sectors including banking, government, and aviation.
- Outage affected services in 74 countries, lasting over 12 hours
- Major institutions including banks, governments, and airlines impacted
- Microsoft excludes cyberattack; fix remains elusive amid partial recovery
What happened
The global outage began on Thursday in the Americas and escalated internationally within an hour, impacting Microsoft’s Outlook email, Teams collaboration tool, and other 365 services. Downdetector recorded outage reports from 74 countries and territories, with notable surges as workdays commenced in the UK, India, and New Zealand.
Affected organizations span banks like Morgan Stanley and Goldman Sachs in Hong Kong, government agencies in Japan and Australia, airlines such as IndiGo and Akasa, and courts and schools. Some entities reverted to offline processes, while others advised clients to use phone communications amid a complete email blackout.
Why it matters
Microsoft 365 is a backbone productivity platform used globally, and its failure demonstrates the extensive operational risks involved when cloud dependencies encounter outages. This disruption hampered communication in critical sectors including banking, government functions, judiciary processes, and essential services.
The incident amplified concerns over reliance on a small number of US-based cloud providers, especially in regions like Europe where policymakers increasingly emphasize reducing dependence on foreign technology. The outage serves as a wake-up call, highlighting vulnerabilities from software updates and centralized service providers.
What to watch next
Microsoft continues to work on a resolution, but so far, partial fixes like traffic rerouting have not delivered sustained recovery. Their executive VP confirmed no malicious activity is involved, suggesting the problem may stem from a problematic update, echoing the 2024 CrowdStrike incident that caused similar widespread disruption.
Enterprises and governments worldwide will be closely monitoring Microsoft’s remediation progress while also reviewing their own contingency plans for future outages. Additionally, increasing phishing and scam attempts exploiting the outage environment pose a secondary risk that organizations must address promptly.