# Pinecone: [Serverless][AWS][us-east-1] 5xx errors on some read and write operations

- Impact (vendor’s label): major
- Status: resolved
- Started: 2025-09-10 13:16 UTC · Resolved: 2025-09-10 16:38 UTC · Duration: 3.4 h
- Updates: 3 · Affected components: AWS us-east-1, Serverless Indexes - AWS us-east-1
- [Vendor status page: https://stspg.io/q04c5pj0t2m3](https://stspg.io/q04c5pj0t2m3)
- [Company: Pinecone](https://rewindex.com/company/pinecone.md)

## Summary

Pinecone reported a major outage causing 5xx errors on some Serverless read and write operations in AWS us-east-1. It started at 2025-09-10 13:16 UTC and was resolved at 2025-09-10 16:38 UTC, lasting 3 h 21 min. A fix was implemented at 13:22 UTC; no cause was stated. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2025-09-10 13:16 UTC: We are currently investigating this issue.
- **monitoring** 2025-09-10 13:22 UTC: A fix has been implemented and we are monitoring the results.
- **resolved** 2025-09-10 16:38 UTC: This incident has been resolved.

## Rewindex changes for this incident

- 2025-09-10 13:16 UTC: [Major incident: \[Serverless\]\[AWS\]\[us-east-1\] 5xx errors on some read and write operations](https://rewindex.com/change/i1c083876676a1a.md)


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Canonical: https://rewindex.com/company/pinecone/incidents/jk4szq3j3pdl · Markdown: https://rewindex.com/company/pinecone/incidents/jk4szq3j3pdl.md · JSON: https://rewindex.com/api/v1/companies/pinecone/incidents/jk4szq3j3pdl · Generated 2026-10-18T11:37:16.833Z