Release Notes for Zabbix 4.0.24rc1

Zabbix Team is pleased to announce the availability of Zabbix 4.0.24rc1.

Zabbix is an enterprise-class open source distributed monitoring solution. Zabbix is released under the GPL, thus it is free of charge for both commercial and non-commercial use. A complete text of the license is available at

This document contains the release notes for Zabbix 4.0.24rc1. Download it from download.

The following sections describe the release in details and provide late-breaking or other information that supplements its main documentation.

Bug Fixes

ZBX-18046 Improved error message generation performance of user macro and item key parser
ZBX-18105 Fixed use on uninitialised variable
ZBX-18014 Added ODBC empty query check
ZBX-18160 Fixed fatal error in items.php and host_discovery.php
ZBX-13383 Improved performance of the trigger and trigger prototype inheritance
ZBX-17974 Implement timeouts for WMI queries
ZBX-13789 Improved performance of "Problems" widget with MySQL backend by removing DISTINCT modifier from SQL statements with tables joined by primary keys
ZBX-17468 Fixed excess audit log record being added on host status update
ZBX-18076 Fixed PHP notice and multiple undefined index errors in hostinterface API
ZBX-18000 Added red label for disabled media types in user profile
ZBX-18075 Fixed runtime error when creating a host via API
ZBX-15927 Removed problem calculation for dependent triggers when master trigger is in problem state
ZBX-18063 Fixed usage of unsupported parameter in API call
ZBX-18060 Fixed inaccessible user be displayed as accessible in slide show properties screen
ZBX-17252 Fixed building of Zabbix daemons with link time optimization

Installation and Upgrade Notes


See Zabbix指导手册。 for full details.


See 升级指南 for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 4.0.24.

Commercial support

Zabbix Company provides a full range of Professional Services. We also provide trouble-free 升级服务 for easy migration from earlier versions of Zabbix. Please 联系我们 for pricing and more details.


Zabbix 4.0 Manual