Microsoft 365 down for nearly 10 hours in North America
Outlook, Teams, Defender and Purview failed when North American infrastructure stopped processing traffic during maintenance.
- Service
- Microsoft 365
- Date
- 22 January 2026
- Cause
- Capacity
- Duration
- 10 hours
- Status
- resolved
- Severity
- critical
- Region
- Global
- Source
- The Register ↗
Cite this
Nuffield Consulting, “Microsoft 365 down for nearly 10 hours in North America”, The Daily Tech Wire outage & breach log, 22 Jan 2026. https://techwire.nuffieldconsulting.com/incidents/2026-01-22-microsoft-365-outage/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: The Register, https://www.theregister.com/2026/01/23/microsoft_365_outage/.
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