Claude (Anthropic) outage, 27 October 2026
Elevated errors for Claude Sonnet 5.5
- Started
- Resolved
- 27 Oct 2026, 15:50 UTC (after 41 min)
- Impact
- Major
- Affected
- claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
Is this still happening?
No. Claude (Anthropic) marked this incident resolved on 27 Oct 2026, 15:50 UTC, 41 min after it began.
Right now: Claude (Anthropic) reports all systems operational. (as of 27 Oct, 16:37 UTC) Live Claude (Anthropic) status
Last update from Claude (Anthropic)
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.
Read the full incident on the official Claude (Anthropic) status page
Similar Claude (Anthropic) incidents
Earlier incidents with the same affected part or wording - useful to see how long this kind of problem usually takes.
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, resolved after 42 min
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, resolved after 34 min
Elevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5
-
, resolved after 6 min
-
, resolved after 18 min