Werk #18305: Avoid "HTTP 404: {"detail":"Not Found"}" in Checkmk UI and REST API

Component

User interface

Title

Avoid "HTTP 404: {"detail":"Not Found"}" in Checkmk UI and REST API

Date

Jul 17, 2025

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.5.0b1 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.4.0p9	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

In case ~/.bashrc or ~/.profile specified the environment variables HTTP_PROXY or http_proxy, various UI or REST API interactions such as service discoveries, activating changes or displaying the parameters of a service (Parameters for this service in dropdown menu) crashed with the above error message.

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