Anthropic probes M365 integration outage disrupting Mail, SharePoint, Teams, and Calendar services

Anthropic is investigating a service degradation affecting its Microsoft 365 connector, according to an official status update published on 12 November.reported The company reported elevated errors and slow responses impacting the integration at 17:52 UTC.reportedAnthropic is looking into problems with its tool that connects to Microsoft 365.Anthropic is investigating elevated error rates and latency in the Microsoft 365 connector.

The claim

The status page indicates that requests to mail, SharePoint, Teams chat and calendar through the connector may fail. Anthropic stated that new connections to the connector may not complete. The investigation was ongoing as of the 12 November update.reported

The response

Anthropic has not provided a root cause analysis or a timeline for resolution in the initial status post. The company stated it will provide an update as soon as possible. No external vendors or third parties have commented on the incident.

What the evidence means

The scope of the outage covers core productivity functions within Microsoft 365.reported Users relying on the connector for real-time data access or automated workflows may experience interruptions. The lack of a confirmed fix means the issue remains unresolved.

In practice

Enterprise IT buyers should monitor the Anthropic status page for updates. Users may need to fall back to native Microsoft 365 interfaces for mail, calendar and file access.reported New connector connections may fail, so provisioning new integrations should be paused until service stabilizes.