Changelog (Werks)
The software development of Checkmk is organized in so-called Werks. A Werk is any change or bug fix that has an influence on the user's experience. Each Werk has a unique ID, one of the levels Trivial Change, Prominent Change or Major Feature and one of the classes Bug Fix, Feature or Security Fix.
Whenever you make an update to a new Checkmk version please make sure that you have understood all incompatible changes. You might have to adapt your configuration.
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- Monday, January 19, 2026
- #18926agent bakery - Generic agent packages not downloadable by folder
- Friday, January 16, 2026
- #18549Windows Time service is always discovered
- Thursday, January 15, 2026
- #18328(Linux) Memory graph: Directly use MemTotal
- #18548w32time_status section breaks cmk_agent_ctl due to umlauts
- #18598Redfish agents no longer crash on wrong credentials
- #19079Check HTTP web service now supports macros in fixed string body searches
- #19175Improved Livestatus Filter Performance on Aggregate Columns
- Wednesday, January 14, 2026
- #18930Add bakery support for Nvidia GPU monitoring (Linux)
- Tuesday, January 13, 2026
- #18370The back button for an exception in the fetch agent output page no longer contains an invalid url
- #18738OTel: Fix collector memorylimit values
- #19063Prevent invalid regex when combining expressions
- Monday, January 12, 2026
- #18327Fix handling of levels with infinity values while rendering horizontal rules within graphs
- #18545Veeam agent plugin supports new Veeam versions
- #18546Reduce the amount of data written to the log file
- #18547Improve encoding support for Veeam agent plugin
- #18705Fix factor for orion system dc power
- #19084Redirect to report content on edit, clone or deletion
- Friday, January 9, 2026
- #18140Stop AWS/RDS check from crashing if metrics are not available
- #19120AP & AP Client monitoring for Cisco Catalyst 9300 series
- #19155Fix retry button on host connection test page
- Thursday, January 8, 2026
- #17378Add new waittypes to mssql blocked sessions
- #17379Enable using PGHOST via mk_postgres.py
- #18070Disable limit on view, dashboard and report list pages
- #18737hp_msa_system: Fix KeyError crash in case of non-English/German health status
- #18976Windows Agent supports new lines and tabs in volume names
- #18990Authority Key Identifier (AKI)
- #19024Improved Micro-core Performance On Reload
- #19026NGINX web servers (Linux) plugin now supports IPv6
- #19130Stormshield: Change OID for SNMP detection
- Wednesday, January 7, 2026
- #19078Fix rate calculation in clustered interface checks
- Monday, January 5, 2026
- #19031Use nologin for Linux agent user's login shell
- #19062WATO service discovery: Fixed incorrect creation of disable rule for duplicate service description
- Wednesday, December 17, 2025
- #18905Avoid missing software packages in HW/SW inventory of Windows hosts