Elevated errors affecting the Microsoft 365 connector
Anthropic reports elevated errors and slow responses that affect the Microsoft 365 connector on claude.ai and Claude Cowork. Mail, calendar and search tools fail for most requests, and new connections to the connector may not complete. Anthropic identified an issue with an upstream provider and continues to work on it.
State
Identified
Started
Ongoing for
1 h 1 min
Worst impact
Partial outage
Timeline
2 updatesInvestigating
44 min 71%
Identified
18 min 29%
Updates
Times in UTCAs posted by Anthropic
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.
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.
Affected components
2Anthropic in the last 90 days
Full historyIncidents in 90 days
47
Days with an incident
41
Median duration
42 min
This incident
1.5× the median
Other Anthropic incidents
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Claude Fable 5.1 had degraded performance. The issue affected claude.ai, the Claude API, Claude Code, and Claude Cowork. Anthropic reports that the incident is resolved.
Anthropic·Elevated errors affecting the Google Calendar connector
The issue affecting the Google Calendar connector on claude.ai, Claude Code, and Claude Cowork has been resolved. Impact occurred from 04:07 PT / 11:07 UTC on October 26 to 11:52 PT / 18:52 UTC on October 28.
Anthropic·Elevated errors affecting the Gmail connector
The issue affecting the Gmail connector on claude.ai, Claude Code, and Claude Cowork has been resolved. Impact occurred from 16:00 PT / 23:00 UTC on October 27 to 22:29 PT on October 27 / 05:29 UTC on October 28.
Anthropic·Elevated errors for Claude Sonnet 5.5
The issue affecting claude.ai, the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 07:42 PT / 14:42 UTC to 08:17 PT / 15:17 UTC.
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