Anthropic: Elevated errors on Claude Code and Claude Cowork

Impact: majorStatus: resolvedStarted 2026-08-28 17:22 UTCResolved 2026-08-28 20:21 UTC (3.0 h)3 updatesSource: stspg.io

Summary

Anthropic reported a major outage affecting Claude Cowork and Claude Code on the web: some sessions failed to start or disconnected mid-task due to an upstream cloud provider issue. It started at 2026-08-28 17:22 UTC and was resolved at 2026-08-28 20:21 UTC, lasting 2 h 59 min. A mitigation was applied; affected sessions could be retried.

Machine-written from the archived incident (Sol). Check the timeline before relying on it.

Affected components: Claude CoworkClaude Code

Timeline of updates

identified2026-08-28 17:22 UTC
We 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.
monitoring2026-08-28 18:21 UTC
A 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
resolved2026-08-28 20:21 UTC
The issue affecting Claude Cowork and Claude Code on the web has been resolved.

Rewindex changes for this incident

Major incident: Elevated errors on Claude Code and Claude Cowork 2026-08-28 17:22 UTC

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Anthropic profile · Recent Anthropic incidents · Markdown · JSON