Claude change history: Service disruption on Claude services

Claude reported a critical disruption involving authentication issues on claude.ai, Claude Code, and Claude Cowork, plus degraded performance across those services, Claude Console, and the Claude API. It started at 2026-08-16 21:58 UTC and was resolved at 2026-08-16 22:34 UTC, lasting 35 min; a fix was deployed at 22:22 UTC.