Topics
Microsoft 365
Microsoft 365 is a cloud-based productivity suite that includes Outlook, Teams, OneDrive, and Copilot. On November 13, 2026, a widespread outage affected 74 countries, disabling Outlook, Teams, and Copilot due to a server‑side CPU spike that caused rack failures. The incident disrupted communication and productivity for millions of users worldwide.
What to know
- Microsoft 365 outage affected 74 countries, disabling Outlook, Teams, and Copilot. Nov 13
- The outage began with Outlook and Teams and expanded to other cloud services. Nov 13
- Outages affect Outlook, Teams and Copilot for users in over 70 countries. Nov 13
- A server‑side CPU spike caused rack failures, triggering the disruption. Nov 13
- The global Outlook outage began shortly before 1 p.m. ET on Thursday, November 12, 2026. Nov 13
Timeline
- Nov 13, 2026
- Nov 13, 2026
- Nov 13, 2026
- Nov 12, 2026
- Nov 12, 2026




