# MinIO RELEASE.2023-02-27T18-10-45Z — Release & Upgrade Intelligence
- **Product:** MinIO (https://min.io)
- **Version:** RELEASE.2023-02-27T18-10-45Z
- **Released:** Feb 28, 2023
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/minio/updates/RELEASE.2023-02-27T18-10-45Z/

## Executive Summary (TL;DR)
MinIO RELEASE.2023-02-27T18-10-45Z. Source highlight: event target registration failures must be returned

## New Features
- tests: Add test for S3 API error codes
- add isValidLocation to common parseLocation
- Support tier-add if tier backend not empty
- Add metrics for custom auth plugin

## Bug Fixes
- fix: delete globalProfiler should lock
- fix: errNoSuchPolicy should use errors.Is
- fix: disk healing should honor the right pool/set index
- fix: allow CORS to work by default