Anthropic change history: Service disruption on Claude services

Anthropic reported a critical disruption involving authentication issues and degraded performance across claude.ai, Claude API, Claude Code, Claude Console, and Claude Cowork. 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.