Editorial Team
4 min read
Anthropic closes Claude login incident as reports of failures persist
Anthropic deployed a fix for authentication problems affecting Claude services and closed the incident on November 13. Later reporting described residual failures, whose connection to the login incident remains unconfirmed.
- Anthropic deployed a fix at 11:05 UTC and marked the incident resolved at 11:58 UTC on November 13.
- The affected services included Claude’s website, coding tool, developer console and Cowork.
- Later reporting described residual failures; a separate Microsoft 365 connector incident remained unresolved.
Anthropic, the company behind the Claude AI assistant and its coding and work tools, said it had resolved an outage affecting Claude services on November 13, 2026. Its incident record shows a fix deployed at 11:05 UTC, followed by a resolution notice at 11:58 UTC. A subsequent report described continuing problems for some users, without establishing whether they had the same cause.
The disruption reached beyond conversations with a chatbot. The affected services were claude.ai; Claude Code, its coding tool; the developer console at platform.claude.com; and Claude Cowork, its tool for knowledge work beyond coding. Anthropic did not disclose how many users were affected or identify a root cause.
Company-reported investigation, fix and closure times from Anthropic. These public updates do not establish the full duration of disruption. Source: Claude Status.
Two hours from investigation to closure
Anthropic’s first notice, at 09:58 UTC, said it was investigating problems authenticating users to Claude.ai and Claude Code. At 11:05 it said a fix had been deployed and recovery was being monitored. The closing update specifically said the issue affecting claude.ai and Claude Cowork had been resolved.
Those timestamps put the interval between the first public investigation notice and closure at two hours. They do not establish the full duration of disruption: users may have encountered failures before the company’s initial notice.
A contemporaneous report described more than 3,000 Downdetector reports in Germany from about 10:45 local time, before Anthropic’s first notice at 10:58 local time. These were complaints submitted to an outage tracker, not a count of distinct affected customers. The available evidence does not establish the outage’s geographic reach or a worldwide failure of every Claude service.
