Major incident
Anthropic (Claude): Elevated errors on Claude Code and Claude Cowork
Aug 28, 2026, 17:22 UTC
started
20:21 UTC
resolved
2 h 59 min
duration
Affected: Claude Code, Claude Cowork
Current status of Anthropic (Claude): Operational — live Anthropic (Claude) status
Timeline
- Aug 28, 2026, 17:22 UTCidentifiedWe have identified an issue with an upstream cloud provider affecting Claude Cowork and Claude Code on the web. Some sessions may fail to start or disconnect mid-task; affected sessions can be retried. We are in contact with the provider and will provide an update as soon as possible.
- Aug 28, 2026, 18:21 UTCmonitoringA mitigation has been applied for the issue affecting Claude Cowork and Claude Code on the web, and we are monitoring for recovery. Sessions that disconnected earlier can be retried
- Aug 28, 2026, 20:21 UTCresolvedThe issue affecting Claude Cowork and Claude Code on the web has been resolved.
Updates as published by Anthropic (Claude) (original).
Other services with incidents at the same time
This was part of a wider event: 30 services reported incidents within the hour.
- Optum 17:17 UTC · System Incident - Optum Integrity One - Production
- Optum 17:14 UTC · System Incident -Optum Enterprise CAC- Production
- Grafana Cloud 17:12 UTC · Partial Logs Write Outage
- Klara 17:12 UTC · Pending eForm submissions 03487798
- Volusion 17:02 UTC · Outage on Some Site Designer Stores
- ITS Network & Systems 16:59 UTC · TSS: Waitlist Report running blank searches
More Anthropic (Claude) incidents
- October 25, 2026 Elevated errors for Claude Fable 5.1
- October 25, 2026 Elevated errors for Claude Sonnet 5.5 and other models
- October 24, 2026 Elevated errors for Claude Fable 5 and Claude Fable 5.1
- October 24, 2026 Elevated errors for Claude Opus 5.5
- October 23, 2026 Elevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5
- October 22, 2026 Elevated errors affecting Connectors