Claude problems on 28 October 2026

Status	Resolved
Worst verdict	Some users report problems
Started	28 Oct 2026, 16:20 UTC
Ended	28 Oct 2026, 20:06 UTC
Duration	3 h 46 min
Official incident	Elevated errors affecting the Google Calendar connector
Affected	claude.ai, Claude Code, Claude Cowork

Timeline

28 Oct 2026, 16:20 UTC

We started seeing problems. Our verdict: Some users report problems.
28 Oct 2026, 16:20 UTC · official update

Elevated errors affecting the Google Calendar connector (investigating): “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.” Source
28 Oct 2026, 18:01 UTC · official update

Elevated errors affecting the Google Calendar connector (investigating): “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.” Source
28 Oct 2026, 19:48 UTC · official update

Elevated errors affecting the Google Calendar connector (monitoring): “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.” Source
28 Oct 2026, 20:06 UTC

Looking normal again. We'll keep watching for 15 minutes before closing this.
28 Oct 2026, 20:20 UTC

Everything has looked normal for 15 minutes, so we marked this incident as resolved.

Times are shown in your local time zone. “Official update” entries quote Anthropic's status page; follow the source link for the full text.

How we track incidents

We open an incident when Claude stops looking normal or Anthropic posts an official incident, and close it after 15 minutes with everything back to normal. More about our method.