For about two hours on Friday morning in Europe, many people could not sign in to Claude. Anthropic's status page shows an incident opened at 09:58 UTC on 13 November for problems authenticating to claude.ai and Claude Code, and closed at 11:58 UTC. If your working day runs through Claude, that is a morning lost, and it was not the only problem that day.
The status record is specific about what broke. Claude.ai was marked as a major outage, the Claude Console at platform.claude.com and Claude Code as partial outages, and Claude Cowork as degraded. The Claude API was not listed among the affected parts. A fix went out at 11:05 UTC, at which point the Console and Claude Code were marked operational again, while claude.ai stayed in major outage until the incident was resolved just under an hour later.
The afternoon brought a second incident. From 13:09 to 15:38 UTC Anthropic reported elevated errors across claude.ai, the Claude API, Claude Code and Cowork, with connectors such as Claude Docs and Claude Sheets degraded for longer. Separately, the Microsoft 365 connector and Claude for Outlook had been failing for most mail, calendar and search requests from 16:03 UTC on 12 November to 16:40 UTC on 13 November, which Anthropic put down to an incident at Microsoft. Overnight, purchases and plan changes on claude.ai also failed for a spell, and on 14 November Sign in with Apple stopped working for some new accounts on the iOS app.
The practical point concerns how you reach Claude. The morning failure sat in the login layer, so tools that call the API with a key, rather than signing in through claude.ai, appear to have been spared until the afternoon errors. Teams that depend on Claude Code for daily work may want an API key or a cloud provider route as a fallback, and a second assistant such as ChatGPT or Gemini for the chat side.
What is missing is an explanation. Anthropic has published no root cause or post-mortem for either 13 November incident, and its updates say little beyond investigating, fix deployed and resolved. Without that, it is impossible to tell whether the two were connected or what has been done to stop a repeat.