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[ARTICLE · art-168539] src=status.claude.com ↗ pub= topic=ai-products verified=true sentiment=↓ negative

Elevated errors affecting the Microsoft 365 connector

Anthropic reported on Nov 12, 2026 that an upstream provider issue is causing elevated errors in the Microsoft 365 connector for Claude, with mail, calendar and search tools failing for most requests and new connections possibly not completing. The incident, first flagged at 17:52 UTC and updated at 18:34 UTC, affects claude.ai and Claude Cowork, and Anthropic said it is in contact with the provider and will post updates as available.

read1 min views3 publishedNov 12, 2026
Elevated errors affecting the Microsoft 365 connector
Image: Status (auto-discovered)

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.

Posted Nov 12, 2026 - 18:34 UTC Investigating

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.

Posted Nov 12, 2026 - 17:52 UTC This incident affects: claude.ai and Claude Cowork.

Subscribe to updates for Elevated errors affecting the Microsoft 365 connector via email and/or text message. You'll receive email notifications when incidents are updated, and text message notifications whenever Claude creates or resolves an incident.

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