# Grafana Cloud: Errors when querying Prometheus datasource

- Provider: [Grafana Cloud](https://outages.cc/grafana.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-10-13 19:55 UTC
- Resolved: 2026-10-13 20:46 UTC (lasted 51 min)
- Components: GCP US Central - prod-us-central-4, Grafana - GCP US Central - prod-us-central-4
- Official update: https://stspg.io/tkdwbmz3gpx0

## Updates from Grafana Cloud

### resolved, 2026-10-13 20:46 UTC

This incident has been resolved. Thank you for your patience.

### monitoring, 2026-10-13 20:29 UTC

We have put some mitigations in place which seem to have helped with the errors. We continue to monitor the results.

### investigating, 2026-10-13 20:01 UTC

We are continuing to investigate this issue.

### investigating, 2026-10-13 19:55 UTC

A small number of customers with stacks in prod-us-central-4 are receiving "forbidden" errors when querying Prometheus data sources. We are investigating and will provide an update soon.