Incident report · read from Anthropic's status page

Anthropic incident: Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API

Resolved after 2 h 5 m (29 Sep 2026, 14:21–16:27 UTC), impact major, affecting Claude Cowork, claude.ai, Claude Code, Claude API (api.anthropic.com) and Claude Console (platform.claude.com).

Timeline

29 Sep 2026 at 14:21 UTC 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.
29 Sep 2026 at 14:28 UTC 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.
29 Sep 2026 at 14:30 UTC 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.
29 Sep 2026 at 14:41 UTC 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.
29 Sep 2026 at 15:00 UTC 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.
29 Sep 2026 at 15:11 UTC 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.
29 Sep 2026 at 15:30 UTC monitoring
All services have been operating normally since 14:59 UTC. We are continuing to monitor.
29 Sep 2026 at 16:27 UTC 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.

Affected components

Claude Cowork: partial outage for 49 m
claude.ai: partial outage for 49 m
Claude Code: partial outage for 49 m
Claude API (api.anthropic.com): degraded · still in this state when the provider last said
Claude API (api.anthropic.com): degraded · still in this state when the provider last said
Claude API (api.anthropic.com): degraded for 1 h 58 m
Claude Console (platform.claude.com): degraded for 1 h
Claude Console (platform.claude.com): degraded · still in this state when the provider last said
Claude Cowork: degraded · still in this state when the provider last said
Claude Cowork: degraded for 19 m
claude.ai: degraded for 19 m
Claude Code: degraded for 19 m
Claude Code: degraded · still in this state when the provider last said

What the crowd did

0 clicks, 3 zombies at their worst, 9 breaches, over 2 h 7 m — the siege in full

That is this site's own record of the crowd at Anthropic's gate, not anything Anthropic published.

Source

Anthropic's own report of this incident, on Anthropic's status page. This page is a record of Anthropic's own report; where the two disagree, theirs is right.

Last checked 30 Oct 2026 at 16:26 UTC.

Must Have AI is a parody and is not affiliated with, endorsed by or connected to OpenAI, Anthropic or Google. Every outage shown here is read from the provider's own public status page.