Microsoft has said the outage was not caused by a cyber-security incident, but efforts to fix the issues have so far been largely unsuccessful.
What we know so far about the Microsoft outage

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Earlier reports and follow-ups on the same developing story.
- What we know about the global Microsoft outage
- GPs, police and pharmacies among UK services affected by Microsoft outage
- Live: Microsoft struggles to restore services as outage hits global users
- Widespread Microsoft outage continues, taking down Outlook and other 365 services
- Microsoft outage live: UK police, NHS services and schools affected amid disruption affecting millions globally
- Microsoft Says ‘No Evidence of Malicious Activity’ in Global Outage of Outlook and Exchange Email
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