# Pinecone: [Serverless][GCP][europe-west4] 5xx errors on read and write operations for some indexes

- Impact (vendor’s label): major
- Status: resolved
- Started: 2025-12-15 10:39 UTC · Resolved: 2025-12-15 22:02 UTC · Duration: 11 h
- Updates: 4 · Affected components: GCP europe-west4, Serverless Indexes - GCP europe-west4
- [Vendor status page: https://stspg.io/wnb1qrp24f8b](https://stspg.io/wnb1qrp24f8b)
- [Company: Pinecone](https://rewindex.com/company/pinecone.md)

## Summary

Pinecone reported a major outage causing 5xx errors on read and write operations for some Serverless indexes in GCP europe-west4. It started at 2025-12-15 10:39 UTC and was resolved at 2025-12-15 22:02 UTC, lasting 11 h 22 min; a fix was implemented, but no cause was stated. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2025-12-15 10:39 UTC: We are currently investigating this issue.
- **identified** 2025-12-15 14:34 UTC: The issue has been identified and a fix is being implemented.
- **monitoring** 2025-12-15 21:20 UTC: A fix has been implemented and we are monitoring the results.
- **resolved** 2025-12-15 22:02 UTC: This incident has been resolved.

## Rewindex changes for this incident

- 2025-12-15 10:39 UTC: [Major incident: \[Serverless\]\[GCP\]\[europe-west4\] 5xx errors on read and write operations for some indexes](https://rewindex.com/change/i6dd2b8219871ed.md)


---
Canonical: https://rewindex.com/company/pinecone/incidents/ksj7pvjgtjlj · Markdown: https://rewindex.com/company/pinecone/incidents/ksj7pvjgtjlj.md · JSON: https://rewindex.com/api/v1/companies/pinecone/incidents/ksj7pvjgtjlj · Generated 2026-10-18T10:41:59.617Z