Release Notes for Zabbix 4.2.4

Zabbix Team is pleased to announce the availability of Zabbix 4.2.4.

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 4.2.4. Download it from here.

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

New Features and Improvements

Extended preprocessing steps with final result row; improved input validation in preprocessing steps Frontend Server
ZBXNEXT-2880 Added access to vmware datastore at vmware vCenter level Proxy Server
ZBXNEXT-5163 Added display of maintenance information in Configuration section for hosts in maitenance Frontend
ZBXNEXT-5036 Added preloader for popup menus Frontend
ZBXNEXT-287 Added SSL support for agent HTTP checks Agent
ZBXNEXT-5179 Added option to specify absolute path in LoadModule; thanks to Glebs Ivanovskis for the patch Agent Proxy Server

Bug Fixes

ZBX-15827 Fixed Windows agent build Agent Proxy Server
ZBX-16217 Fixed value trim in multiline input Frontend
ZBX-16218 Fixed zabbix_sender does not clean up its semaphores Agent
ZBX-16152 Fixed not data loss on saving host prototypes by user with insufficient permissions Frontend
ZBX-16126 Fixed checkbox selection on navigate to inherited template in triggers and items Frontend
ZBX-15952 Fixed errors when trying to create a graph widget for key system.cpu.util[,iowait] with Y axis placed on the left side of the graph Frontend
ZBX-15899 Added output sanitization to prevent invalid UTF-8 sequences in regexp-based text replacement Agent Proxy Server
ZBX-16073 Fixed horizontal scrolling in map Frontend
ZBX-15943 Fixed discovered hosts are not removed from table "dhosts" after removing and adding the corresponding discovery check Server
ZBX-15875 Fixed colors for the multiselect disabled elements Frontend
ZBX-10948 'iT Services --> Service Time --> Note' infinite stretching Frontend
ZBX-15585 Fixed web scenarios pair manager issue when fields are duplicating on post type toggle Frontend
ZBX-16142 Fixed missing sys/ioctl.h from src/libs/zbxsysinfo/openbsd/net.c; thanks to Andrea Biscuola for the patch Agent
ZBX-16166 Fixed Zabbix fping feature detection does not work with fping builds since 10 Feb 2017 Proxy Server
ZBX-16178 Fixed distributive can contain untracked backup file include/ Installation
ZBX-16170 Fixed crash in global event correlation Server
ZBX-16096 Fixed "system.cpu.util" reporting incorrect CPU utilisation due to guest time sometimes not being fully included in user time by "/proc/stat" Agent
ZBX-15882 Fixed widgets flickering on refresh Frontend
ZBX-15974 Improved trigger expression list in trigger modal form Frontend
ZBX-14441 Fixed windows agent "eventlog" key for reading big event log files of windows 2003 Agent
ZBX-16109 Fixed hidden error in graphs for PHP 7.3.5 Frontend
ZBX-16093 Fixed regular expression File systems for discovery does not contain apfs Installation Server
ZBX-16080 Fixed setup page to not to use bclib Frontend
ZBX-15797 Fixed dashboard map widget sub-map link behaviour Frontend
ZBX-15049 Fixed to host group limited global scripts to be usable in sub group API Frontend
ZBX-16138 Fixed return value type and added preprocessing steps for items in remote internal checks tamplates; fixed unsigned write cache value for remote internal checks Proxy Server Templates
ZBX-15942 Changed proxy to send timestamps of empty historical values to server, so throttled items are not listed in administration/queue Proxy Server
ZBX-15963 Fixed HTTP agent support of non-HTTP scheme in URL field Proxy Server
ZBX-16151 Fixed theoretical possibility of large numbers in json data being truncated, added boolean value support to json parser Proxy Server
ZBX-15778 Fixed wrong filtering by "Age less than" and "Show suppressed problems" in trigger overview Frontend
ZBX-16150 Fixed inactive, unmounted, unaccessible VMware datastore causes unknown column nan insertion in field list Server
ZBX-16122 Fixed api validation of trigger dependency API

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 4.2.4.

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 4.2 Manual