# Dagster: Cannot launch runs in Serverless

- Impact (vendor’s label): major
- Status: resolved
- Started: 2023-08-03 20:29 UTC · Resolved: 2023-08-03 21:23 UTC · Duration: 54 min
- Updates: 3 · Affected components: API
- [Vendor status page: https://stspg.io/ypf9f69mspmg](https://stspg.io/ypf9f69mspmg)
- [Company: Dagster](https://rewindex.com/company/dagster.md)

## Summary

Dagster reported a major API incident preventing Serverless runs from launching, starting 2023-08-03 20:29 UTC and resolved at 2023-08-03 21:23 UTC (53 min). Runs were launching successfully as of 20:50 UTC; Dagster attributed the issue to AWS EC2 API errors and latency affecting AWS Fargate, used by Dagster Cloud Serverless. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2023-08-03 20:29 UTC: We are currently investigating this issue.
- **monitoring** 2023-08-03 21:09 UTC: We are seeing runs successfully launch as of 20:50 UTC. We are continuing to monitor the situation.
- **resolved** 2023-08-03 21:23 UTC: AWS was experiencing increased API error rates and latencies for their EC2 APIs, which impacted AWS services making use of these APIs. This included AWS Fargate, which is used in Dagster Cloud Serverless. Their incident was resolved as of 21:18 UTC.

## Rewindex changes for this incident

- 2023-08-03 20:29 UTC: [Major incident: Cannot launch runs in Serverless](https://rewindex.com/change/i00e3f02db5c2ad.md)


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Canonical: https://rewindex.com/company/dagster/incidents/byv669xztg6c · Markdown: https://rewindex.com/company/dagster/incidents/byv669xztg6c.md · JSON: https://rewindex.com/api/v1/companies/dagster/incidents/byv669xztg6c · Generated 2026-10-18T10:00:21.126Z