Microsoft 365 outage hits Outlook, Teams and Copilot for nearly two days
Event Brief generated 41 s read
Written by an AI. It was merged from the 4 sources on this page and has not been reviewed by a person.
The short version
- Outlook, Teams and Copilot were down for users worldwide.
- Microsoft says failed server health checks caused the outage and denies it was an attack.
- Service is recovering in stages, with some features still degraded.
What happened
Microsoft is investigating a widespread outage across several Microsoft 365 services, including Outlook, Teams and Copilot. The Verge reports the outage lasted almost two days and that access to email is returning for some users. Ars Technica reports Microsoft blames failed server health checks, not hackers. MarketWatch reports an analyst estimated a $100 million to $400 million negative impact if Microsoft offers credits.
Why it might matter
Many offices and public bodies rely on these services for mail and meetings. Recovery and compensation terms may affect how organizations plan for cloud dependency.
What we don’t know yet
The feed summaries do not give a root cause beyond failed health checks, a restoration timeline, or a final list of affected services. The analyst cost estimate is an outside projection, not a Microsoft figure.
