Claude (Anthropic) outage on September 29, 2026: Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API
Claude reported an incident affecting Claude (Anthropic) for 2 hours 6 minutes on 29 September 2026, from 14:21 to 16:27 UTC.
Resolved
Official incident reported by Claude
- Started
- 14:21
- 29 Sep 2026 UTC
- Resolved
- 16:27
- 29 Sep 2026 UTC
- Duration
- 2h 6m
- 2 hours 6 minutes
- Impact
- Major
- as rated by Claude
- Updates
- 8
- posted by Claude
Timeline
All times UTC.
Official incident from Claude
Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API
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Official
Investigating
We are investigating elevated error rates affecting Claude.ai (including the desktop and mobile apps), Claude Code and Claude Cowork. Users may see failed requests, errors loading or sending conversations, or be asked to sign in again; retrying may succeed. We will provide an update as soon as possible.
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Official
Investigating
We are investigating elevated error rates affecting Claude.ai (including the desktop and mobile apps), Claude Code and Claude Cowork. Some requests to the Claude API are also returning errors. We will provide an update as soon as possible.
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Official
Investigating
We are investigating reports of degraded performance affecting claude.ai, platform.claude.com, the Claude API, Claude Code, and Claude Cowork. We will provide an update as soon as possible.
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Official
Investigating
We have applied a mitigation and error rates have dropped substantially. Some sign-in attempts, account actions and Claude Code and Cowork sessions are still failing. We are continuing to work on a full fix.
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Official
Investigating
The errors that began at 14:00 UTC were mitigated at 14:36 UTC, and existing conversations are mostly working again. A second issue is preventing many users from signing in (single sign-on and Sign in with Apple are unavailable), starting new chats, voice conversations and Claude Code or Cowork sessions, making purchases, and uploading files. If you're signed in, please don't sign out. We're working on a fix and will post another update within 30 minutes.
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Official
Monitoring
Most services have recovered as of 14:59 UTC. Signing in, starting new chats, voice conversations, Claude Code and Cowork sessions, purchases and file uploads are working again. Some messages sent between 14:00 and 14:59 UTC may not have been saved. We are monitoring closely and will post another update within 30 minutes.
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Official
Monitoring
All services have been operating normally since 14:59 UTC. We are continuing to monitor.
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Official
Resolved
The issue affecting Claude.ai, the Claude desktop and mobile apps, Claude Code, Claude Cowork, and the Claude API has been resolved, and services have been operating normally since recovery. Impact occurred from 07:00 PT / 14:00 UTC to 07:59 PT / 14:59 UTC.
"Official" rows are quoted from Claude's public status page, status.claude.com. Very long posts are shortened.
What our checkpoints saw
HostTracker's checkpoints, which test claude.ai from several locations, recorded no outage of 5 minutes or longer during this incident. A provider can report a problem that affects only some features, regions or accounts, which a check of the main address does not see. The live Claude (Anthropic) status shows what our checks see right now.
Does your product depend on Claude (Anthropic)?
An outage like this one reaches your users through your product, and most teams hear about it from a customer rather than from a dashboard. HostTracker watches any endpoint you name - your own site, an API you call, a vendor you resell - from 300+ locations, confirms a failure from several of them before it says anything, and then tells you by email, SMS, voice call or your chat tool.
You get the same record you are reading here for your own services: every outage timestamped, with the checks that observed it.
Independent measurement by HostTracker. Not affiliated with Claude (Anthropic). Official updates are quoted from Claude's public status page and remain Claude's own words.