Claude down: login errors hit Claude.ai, API and Claude Code
Claude.ai, the API and Claude Code all hit trouble on Friday. Downdetector logged 2,895 complaints against a normal baseline of two.
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giftdetect· the right gift in minutesIf Claude refused to let you in on Friday, you were not alone. Anthropic confirmed a wider outage that hit its chatbot, its API and Claude Code, with people mostly reporting login and authentication failures.
According to Anthropic's status page, the incident was acknowledged at 9:58 UTC. The company said it was investigating "degraded performance affecting a variety of surfaces", including claude.ai, the Claude API, Claude Code, connectors (including Claude Docs and Claude Sheets), Claude Security and Claude Managed Agents. It had not given a time for a fix.
How bad was the Claude outage?
Downdetector, which collects user complaints, showed 2,895 reports about Claude at around 3:45 PM IST. The usual baseline is two. On Anthropic's own dashboard, Claude.ai was marked as a major outage. Claude Console and Claude Code showed partial outages, and Claude Cowork was running with degraded performance.
Is the Microsoft 365 connector problem related?
Not directly. Anthropic has also been dealing with a separate issue since November 12 involving its Microsoft 365 connector, which lets Claude reach Outlook, SharePoint, Teams and calendars. The company blamed an incident at Microsoft. It reported elevated errors and slow responses for mail, SharePoint, Teams chat and calendar requests, and said new connections could fail. Claude for Outlook was among the affected tools. Anthropic said it was working with Microsoft, which was restarting affected servers.
OpenAI is in a similar spot. Its status page logged "Elevated errors affecting the Microsoft 365 connector" on November 12, with ChatGPT's Connectors/Apps component showing degraded performance. Users could be unable to set up new connections, or see connected tools misbehave.
The Friday login trouble is a separate matter from the Microsoft problem, but both get in the way of using AI tools tied to Microsoft's ecosystem. Anthropic says it will post more updates on its status page as it learns more.
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