Anthropic Logs Login Outage on Claude.ai and Claude Code
TL;DR
- Anthropic's status page opened the incident at 09:58 UTC on Nov 13, 2026, citing authentication errors across claude.ai, Claude Code and platform.claude.com.
- Claude.ai was marked a major outage, Claude Console and Claude Code partial, and Claude Cowork degraded; the Claude API was not listed as affected.
- A fix was deployed by 11:05 UTC and Anthropic moved to monitoring; Downdetector India peaked at 2,906 reports versus a baseline of two.
Anthropic opened an incident on its status page at 09:58 UTC on Nov 13, 2026, reporting authentication failures across claude.ai, Claude Code and platform.claude.com. The Claude API was not listed as affected.
'We are investigating an issue with users authenticating to Claude.ai and Claude Code,' the first update said. Claude.ai was marked as a major outage, Claude Console and Claude Code as partial, and Claude Cowork as degraded. Third-party monitoring put Downdetector India reports at 2,906 around 3:20 PM IST, from a normal baseline of two.
A fix followed at 11:05 UTC: 'A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.' Anthropic did not disclose a root cause.
The login incident overlapped with a separate Claude for Outlook disruption tied to a Microsoft 365 service incident that began at 17:52 UK time the previous day, and lands on the same day we tracked Anthropic's self-hosted Claude managed-agents private beta.
Originally reported by status.claude.com
Read the original article →Original headline: Anthropic Hit by Ten-Hour Authentication Outage Across Claude.ai, Claude Code and Platform