Anthropic incident: Elevated errors affecting the Google Calendar connector

Affected components

• Claude Code
• Claude Cowork
• claude.ai

1. resolvedOct 28, 2026, 20:05 UTC

   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.

2. monitoringOct 28, 2026, 19:47 UTC

   We are seeing recovery for errors affecting the Google Calendar connector, and error rates have returned to normal levels. We are continuing to monitor with our upstream provider.

3. investigatingOct 28, 2026, 17:59 UTC

   We are continuing to investigate elevated errors affecting the Google Calendar connector, and are working with our upstream provider. We will provide another update as soon as we have more information.

4. investigatingOct 28, 2026, 16:19 UTC

   We are investigating elevated errors affecting the Google Calendar connector. Some requests to list or search calendar events have been failing since October 26. We will provide an update as soon as possible.

What APIStatus.watch saw

• Oct 28, 2026, 16:25 UTCoperational → degraded
• Oct 28, 2026, 20:09 UTCdegraded → operational

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How often does Anthropic have incidents?

Anthropic reported 45 incidents in the last 90 days, 26 of them major or critical. A typical incident lasted 1h 13m. See Anthropic's uptime and incident history