Werk #19086: Parent scan: Show helpful error message on error

Component	Setup
Title	Parent scan: Show helpful error message on error
Date	Jan 22, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.6.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.4.0p20 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.3.0p43 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

In some cases, the user settings for the parent scan could not be loaded correctly, leading to a generic error message. This werk improves the error handling to provide a more informative message, helping users understand the issue and how to resolve it.

If you encounter this error in previous versions, please delete the file '~/var/check_mk/web/USERNAME/parentscan.mk' and visit the parent scan page again.

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