Anthropic incident
Elevated errors affecting the Microsoft 365 connector
Ongoing since 05:52 PM UTC, affecting claude.ai and Claude Cowork.
We have identified an issue with an upstream provider affecting the Microsoft 365 connector. Mail, calendar and search tools are failing for most requests, and new connections to the connector may not complete. We are in contact with them and will provide an update as soon as possible.
Affected components
Update timeline
- investigating Nov 12, 2026, 05:52 PM UTC
We are investigating elevated errors and slow responses affecting the Microsoft 365 connector. Requests to mail, SharePoint, Teams chat and calendar through the connector may fail, and new connections to the connector may not complete. We will provide an update as soon as possible.
- identified Nov 12, 2026, 06:34 PM UTC
We have identified an issue with an upstream provider affecting the Microsoft 365 connector. Mail, calendar and search tools are failing for most requests, and new connections to the connector may not complete. We are in contact with them and will provide an update as soon as possible.
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