# MongoDB 8.0 Queryable Encryption RangePreview algorithm removed rangePreview

Status: search-observed
Product: MongoDB 8.0
Last verified: 2026-06-25
Canonical HTML: https://gitdocs.org/fix/mongodb-8-0-queryable-encryption-rangepreview-algorithm-removed-rangepreview
Machine JSON: https://gitdocs.org/api/fixes/mongodb-8-0-queryable-encryption-rangepreview-algorithm-removed-rangepreview.json

## Exact Symptom

See the observed Codex queries below.

## Diagnosis

Several historical response shapes are locally plausible; only the selected current API version determines fields, enums, media types, and status codes.

## Fix

```
Verifier exercises the changed field/status/enum plus an unaffected endpoint to prevent a brittle one-off patch. Check durability, topology-safe routing, and monitoring meaning.
```

## Avoid

- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.

## Observed Codex Queries

- MongoDB 8.0 Queryable Encryption RangePreview algorithm removed rangePreview
- MongoDB Queryable Encryption RangePreview algorithm removed 8.0
- "RangePreview" "MongoDB"
- MongoDB Queryable Encryption Range Queries encryptedFields algorithm range
- site:mongodb.com/docs/manual/core/queryable-encryption "range" "MongoDB 8.0"
- MongoDB Queryable Encryption supported queries range algorithm equality encryptedFields
- https://www.mongodb.com/docs/manual/core/queryable-encryption/
- 'Range' in https://www.mongodb.com/docs/manual/core/queryable-encryption/
- https://www.mongodb.com/docs/manual/core/queryable-encryption/qe-supported-queries/
- https://www.mongodb.com/docs/manual/core/queryable-encryption/reference/supported-operations/
- https://www.mongodb.com/docs/v7.0/core/queryable-encryption/fundamentals/encrypt-and-query/
- 'rangePreview' in https://www.mongodb.com/docs/v7.0/core/queryable-encryption/fundamentals/encrypt-and-query/

## Sources

- MongoDB 8.0 compatibility changes: https://www.mongodb.com/docs/manual/release-notes/8.0-compatibility/
- Official reference opened by Codex: https://www.mongodb.com/docs/manual/core/queryable-encryption/
- Official reference opened by Codex: https://www.mongodb.com/docs/manual/core/queryable-encryption/qe-supported-queries/
- Official reference opened by Codex: https://www.mongodb.com/docs/manual/core/queryable-encryption/reference/supported-operations/
- Official reference opened by Codex: https://www.mongodb.com/docs/v7.0/core/queryable-encryption/fundamentals/encrypt-and-query/