# Substack: Increased error rates

- Impact (vendor’s label): major
- Status: resolved
- Started: 2025-04-29 18:15 UTC · Resolved: 2025-04-29 19:16 UTC · Duration: 1.0 h
- Updates: 8 · Affected components: Writer dashboards, Email delivery, Push Notifications, Subscription invoice processing, Substack publications, Substack.com, Custom domains
- [Vendor status page: https://stspg.io/d33x8f6hwgym](https://stspg.io/d33x8f6hwgym)
- [Company: Substack](https://rewindex.com/company/substack.md)

## Summary

Substack reported a major incident with increased error rates and system-wide performance degradation affecting publications, writer dashboards, Substack.com, the app, and post editor. It started at 2025-04-29 18:15 UTC and was resolved at 2025-04-29 19:16 UTC, lasting 1 h 1 min; full recovery was reported at 18:41 UTC. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2025-04-29 17:03 UTC: We are currently investigating this issue.
- **investigating** 2025-04-29 17:49 UTC: This issue is causing performance degradation across the system.
- **investigating** 2025-04-29 17:52 UTC: The website is down.
- **identified** 2025-04-29 18:03 UTC: We are experiencing elevated error rates across all Substack applications including publication websites, Substack.com, and the Substack apps. We have identified the issue and we are working toward recovery.
- **identified** 2025-04-29 18:11 UTC: We are beginning to see recovery across Substack and error rates are returning the normal levels.
- **identified** 2025-04-29 18:15 UTC: We are continuing to see recovery. Substack publications, the publisher dashboard, and other functionality are fully recovered. We continue to work on increased error rates across Substack.com, the Substack app, and the post editor.
- **monitoring** 2025-04-29 18:41 UTC: We are seeing full recovery across Substack and our team is now monitoring.
- **resolved** 2025-04-29 19:16 UTC: This incident has been resolved.

## Rewindex changes for this incident

- 2025-04-29 18:15 UTC: [Major incident: Increased error rates](https://rewindex.com/change/i7b561c001c7c1d.md)


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Canonical: https://rewindex.com/company/substack/incidents/dt9f5z1rt5wg · Markdown: https://rewindex.com/company/substack/incidents/dt9f5z1rt5wg.md · JSON: https://rewindex.com/api/v1/companies/substack/incidents/dt9f5z1rt5wg · Generated 2026-10-18T10:24:54.906Z