Microsoft has apologised after a widespread service disruption affected Outlook, Teams and other services across 72 countries on Thursday, interrupting communication tools and calendar functions for users worldwide.
The company attributed the outage to a technical issue linked to a recent network capacity upgrade, ruling out malicious activity or a cyberattack. Downdetector recorded at least 43,000 reports of Outlook access problems across 72 countries within an hour, with complaints rising across several European nations.
Microsoft said it would continue monitoring its services and publish a full post-incident report after completing its investigation. The company is working to ensure the stability of affected systems following the disruption.
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Microsoft ‘deeply sorry’ as outage triggers global chaos https://t.co/tCFVQ0S7Td
— The Straits Times (@straits_times) November 13, 2026
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