# Authentication failures when running search queries for some clusters

- Provider: [MongoDB Atlas](https://down.guide/mongodb-atlas)
- Level: confirmed
- Impact: Degraded
- lasted 6h 18m
- started 2026-05-23 19:48 UTC
- MongoDB Cloud, MongoDB Atlas Search
- id: DWN-b3e38cffad
- Official page: https://stspg.io/9xrc36hrrnmx

## Updates from MongoDB Atlas
### 2026-05-23 19:48 UTC: investigating
We are investigating an issue impacting some clusters that causes search queries to fail with authentication failures.

### 2026-05-23 20:14 UTC: identified
We have identified the root cause of the search query failures and are working on a mitigation for impacted clusters. Clusters with dedicated search nodes are unaffected. Some clusters with colocated search nodes may see search query failures.

### 2026-05-24 00:14 UTC: monitoring
We have resolved the issue for all impacted clusters. We continue to monitor the fleet for any residual impact.

### 2026-05-24 02:05 UTC: resolved
This incident has been resolved.

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