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Anthropic investigates November 13 Claude authentication outage

2 sources · 3 articlesFirst reported Updated ()1
What's new

November 13, 10:20 UTC: a later Hacker News report restates the same 09:58 investigation and adds no cause, scope, or restoration time.

Merged summary · x-ai/grok-4.7 · rewritten as coverage arrivesSummaries by Vani AI

Anthropic is investigating login and availability failures on Claude.ai, Code, Console, and Cowork; the API stayed up.

Anthropic said it is investigating users who cannot authenticate to Claude.ai and Claude Code. A status update posted November 13, 2026 at 09:58 UTC names claude.ai, Claude Console at platform.claude.com, Claude Code, and Claude Cowork, without a cause, user scope, or restoration time. Hacker News comments citing the status page labeled claude.ai a major outage, Console and Claude Code partial outages, and Claude Cowork degraded, while api.anthropic.com stayed operational. One user reported a brief Cloudflare block that cleared after a network change; another said the service seemed to work again while the incident remained under investigation.

Key facts
  • Status update posted November 13, 2026 at 09:58 UTC.
  • Named services: claude.ai, Claude Console, Claude Code, and Claude Cowork.
  • Cited labels: major outage, two partial outages, and degraded performance.
  • api.anthropic.com was listed as operational.
  • Cited incident page: status.claude.com/incidents/nn11wk485zfn.
  • Anthropic gave no cause or expected restoration time.
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Timeline

dated events in the reporting · oldest first
  1. Nov 13, 2026Anthropic posted an update investigating Claude authentication errors. · Hacker News

What each outlet adds

beyond the shared facts
  • Hacker NewsSeverity labels, operational API, incident URL, and user reports.
  • Hacker News09:58 UTC notice names four products and gives no cause.
Vendors
AnthropicMicrosoft
Products
claude.aiClaude CodeClaude ConsoleClaude CoworkClaude APIplatform.claude.comMicrosoft 365 connectorClaude for Outlook
Organizations
Cloudflare
AI models
Fable 5.2Mythos 5.2

Coverage

oldest first · one row per article · UTC
  1. · 1d ago Hacker News · securityFirst report

    Anthropic confirms major claude.ai outage; API stays operational

    Status labels cited on Hacker News put Console and Claude Code in partial outage and Claude Cowork degraded.

  2. · 1d ago Hacker News · AI

    Anthropic investigates authentication errors on Claude.ai and Claude Code

    The November 13 status note also lists Claude Console and Claude Cowork, with no cause or restoration time.

  3. · 1d ago Hacker News · AI

    Claude.ai and Claude Code report authentication errors

    Anthropic's status page says the November 13 login issue is under investigation, while a Microsoft 365 connector failure continues.