Werk #20097: Fix "Unknown password type." when configuring AWS S3 or Azure backup targets

Component

Setup

Title

Fix "Unknown password type." when configuring AWS S3 or Azure backup targets

Date

Jun 5, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p8	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Opening the Site backup targets list showed the error message "Unknown password type." for backup targets of type AWS S3 Bucket or Azure Blob Storage that were added or edited on 2.5, and backups for those targets could no longer be created, restored, or triggered. Backup targets that were configured before the update to 2.5 and not edited afterwards were not affected.

The backup setup now saves targets correctly again. Any targets saved in the incorrect format are fixed during the update.

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