Claude outage October 27, 2026
Elevated errors for Claude Sonnet 5.5
Claude claude.ai was down for 41 min on October 27, 2026.
Claude recorded a major-impact incident affecting claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork on October 27, 2026. It ran for 41 min — 26 min shorter than the archive median of 1 h 7 min.
- Started
- October 27, 2026, 15:09 UTC
- Resolved
- October 27, 2026, 15:50 UTC
- Duration
- 41 min
- Impact
- Major
What was affected?
How long did it last?
- October 27, 2026, 15:09 UTCidentifiedT+0
- October 27, 2026, 15:50 UTCresolvedT+41 min
Has this happened before?
This was incident 14 of 16 recorded in October 2026, totalling 172 h 2 min of reported disruption across all Claude components that month. claude.ai was affected by 11 other recorded incidents in the 30 days before this one started. The previous incident touching claude.ai started on October 27, 2026. These comparisons are drawn from our archive, which starts on July 14, 2026. See the full outage history.
Summarized by Claude Network from Claude Status. Last verified .