Companies / Substack / changes
Substack change history
| When (UTC) | Change | Kind |
|---|---|---|
| Major incident: Substack Availability Issues Substack reported a major availability outage affecting Substack.com, Substack publications, and Writer dashboards starting at 2026-02-12 23:25 UTC. It lasted 1 h 5 min and was resolved at 2026-02-13 00:31 UTC; Substack reported implementing a fix but did not state a cause. | Major incident | |
| Major incident: 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. | Major incident | |
| Major incident: Post emails delayed Substack reported a major incident starting 2025-10-20 13:41 UTC, delaying scheduled post emails and partially disrupting publication dashboards, subscriber tabs and statistics. The vendor linked scheduled-post delays to a service-provider outage; manual publishing was a workaround. Scheduled sends recovered and the backlog cleared; the incident resolved at 2025-10-21 00:52 UTC after 11 h 11 min. | Major incident | |
| Major incident: Increased error rates | Major incident | |
| Major incident: Errors loading notes feed | Major incident | |
| Major incident: Substack home page and app home tab errors | Major incident | |
| Major incident: Increased latency and errors | Major incident | |
| Major incident: Elevated Error Rates | Major incident | |
| Major incident: Posts not being delivered via email | Major incident | |
| Critical incident: Substack increased latency and error rate | Major incident | |
| Critical incident: Increased error rates | Major incident | |
| Major incident: Delayed push notifications due to OneSignal outage | Major incident |