Anthropic Claude login outage, November 13, 2026

Anthropic's Claude services suffered an authentication outage on November 13, 2026, with users unable to log in to claude.ai and Claude Code. Anthropic opened the incident on its status page at 9:58 AM UTC (4:58 AM Eastern, 1:58 AM Pacific), stating it was investigating an issue with users authenticating to Claude.ai and Claude Code. On Anthropic's component markings, claude.ai was a major outage, Claude Console (platform.claude.com) and Claude Code were partial outages, and Claude Cowork was degraded; the Claude API was not listed as affected. The incident is separate from Claude's Microsoft 365 connector incident, which began November 12 and remains open; Anthropic has not linked the login outage to Microsoft and has not disclosed a cause for it.

Timeline: Investigating from 9:58 AM UTC on November 13, 2026 (4:58 AM Eastern). At 11:05 AM UTC (6:05 AM Eastern, 3:05 AM Pacific) Anthropic said a fix had been deployed for the issue affecting Claude services and it was monitoring for recovery. At 11:58 AM UTC (6:58 AM Eastern, 3:58 AM Pacific) Anthropic resolved the incident, stating the issue affecting claude.ai and Claude Cowork had been resolved. Total duration as recorded on the incident record: 1 hour 59 minutes.

Affected services and scope: claude.ai (major outage), Claude Console at platform.claude.com (partial outage), Claude Code (partial outage), and Claude Cowork (degraded performance). The Claude API was not listed among the affected components. Claude is a global service and no region was singled out in Anthropic's account; user reports were global, with Downdetector India reports peaking at 2,906 against a baseline of two, per AI Weekly's reporting of the incident record.

Provider's account: Anthropic said it was investigating an issue with users authenticating to Claude.ai and Claude Code, then that a fix had been deployed and it was monitoring for recovery, then that the issue affecting claude.ai and Claude Cowork had been resolved. No cause has been disclosed, and no compensation has been stated.

Status: Restored November 13, 2026, at 6:58 AM Eastern (11:58 AM UTC). The incident began and was restored between full outage sweeps, so it never stood as an active board incident; it is recorded here as a restored incident. Verified November 13, 2026 at about 7:24 AM Eastern: Anthropic's official status page incident record (read via the Pingoru mirror of status.claude.com, incident "Elevated errors on claude.ai, Claude Code, and platform.claude.com," resolved after 1 hour 59 minutes), cross-verified by SNJ Today (published 5:09 AM Eastern November 13, reporting Anthropic's 4:58 AM Eastern investigating post, claude.ai major outage and Claude Code and the developer console partial), AI Weekly, and Neowin (November 13, 6:03 AM Eastern).

Sources: Claude Status, Pingoru mirror of the Anthropic incident record: Elevated errors on claude.ai, Claude Code, and platform.claude.com, resolved after 1h 59m, SNJ Today: Claude Down as Microsoft Outage Hits a Second Day, November 13, 2026, AI Weekly: Anthropic Logs Login Outage on Claude.ai and Claude Code, November 13, 2026, AI Letter: Claude hit by two-hour login outage, November 13, 2026