Is Claude down? › Outage history › Aug 4, 2026
Claude partial outage on Aug 4, 2026: what happened
On Aug 4, 2026, the Claude status page reported "Elevated errors across many models". About 1 hour 11 min: from Aug 4, 2026, 20:48 UTC to Aug 4, 2026, 21:59 UTC, by the official start and resolution times.
Claude right now
At our last refresh (Oct 22, 2026, 12:35 UTC) Claude was up: All Systems Operational.
- Started
- Aug 4, 2026, 20:48 UTC
- Resolved
- Aug 4, 2026, 21:59 UTC
- Duration
- 1 hour 11 min
- Official impact
- Major
- Affected
- claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Source
- Elevated errors across many models on the Claude status page
The Claude status page rated the impact "Major": a partial outage. Some parts or some users were affected; it was not a complete outage.
What caused the Claude partial outage?
The Claude status page has not published a cause. Its updates describe the symptoms only.
When was it fixed?
The Claude status page marked it resolved at Aug 4, 2026, 21:59 UTC, 1 hour 11 min after it started. Its resolution note: "This issue has been resolved."
Timeline of official updates
Every update the Claude status page posted, oldest first. Times are UTC.
Aug 4, 2026, 20:48 UTC investigating
We are currently investigating this issue.
Aug 4, 2026, 21:04 UTC investigating
We have identified an issue which resulted in some users experiencing issues when attempting to log into Anthropic services, including Claude.ai and Claude Code via oAuth. Additionally, some users saw errors when making requests to models. At this time, we have seen success rates recover and are monitoring closely to ensure there are no further issues.
Aug 4, 2026, 21:59 UTC resolved
This issue has been resolved.
The same incident was listed for Claude Cowork, Claude Code, which share Claude's status page.
Claude partial outage questions
What caused the Claude partial outage on Aug 4, 2026?
The Claude status page has not published a cause.
When was the Claude partial outage on Aug 4, 2026 fixed?
The Claude status page marked it resolved at Aug 4, 2026, 21:59 UTC, 1 hour 11 min after it started. Its resolution note: "This issue has been resolved."
How long did the Claude partial outage last?
About 1 hour 11 min: from Aug 4, 2026, 20:48 UTC to Aug 4, 2026, 21:59 UTC, by the official start and resolution times.
Was Claude completely down?
No. The Claude status page rated the impact "Major": a partial outage. Some parts or some users were affected; it was not a complete outage. The affected parts listed were: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork.
Which parts of Claude were affected?
The Claude status page listed: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork.
Other recent Claude incidents
- Elevated errors affecting Connectors Oct 22, 2026, 03:50 UTC, 4 hours 17 min
- Degraded performance for Claude Fable 5 Oct 21, 2026, 19:49 UTC, 40 minutes
- Issue with spend limits Oct 7, 2026, 21:23 UTC, duration not stated
- Elevated errors on platform.claude.com Oct 7, 2026, 13:25 UTC, 6 days 5 hours
- Elevated errors loading usage data on platform.claude.com Oct 7, 2026, 01:20 UTC, 1 hour 13 min
- Elevated errors for Claude Opus 5.5 Oct 6, 2026, 12:24 UTC, 19 minutes
Full Claude outage history and biggest outages → · Recent outages across all services →
Quotes are the Claude status page's own words, from the official incident. Is It Up or Down is independent and not affiliated with Claude. Times are UTC.