Substack change history: Substack Availability Issues

Substack reported a major outage affecting Substack.com, Substack publications and Writer dashboards, with loading issues starting at 2026-02-11 14:24 UTC. A fix was deployed, and services, error rates and latency returned to normal by 15:15 UTC; the incident was resolved at 2026-02-11 15:45 UTC, lasting 1 h 21 min.