Release Notes for Zabbix 4.0.1rc1

Zabbix Team is pleased to announce the availability of Zabbix 4.0.1rc1.

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 4.0.1rc1. Download it from download.

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

New Features and Improvements

ZBXNEXT-4725 Added filter fields to select templates and hosts by directly linked templates; made proxy filter field visible in configuration hosts field
ZBXNEXT-4796 Added 'fullscreen' and 'kiosk' URL arguments to allow to set layout mode via link
ZBXNEXT-4782 Improve out of memory error message by adding statistics and backtrace; improve something impossible has just happened error message by adding backtrace
ZBXNEXT-4271 Improved escalator performance by using nextcheck index instead of reading whole table

Bug Fixes

ZBX-14807 Fixed selection box for graphs on monitoring screens
ZBX-14779 Extended support of system.stat[ent], system.stat[cpu,pc], system.stat[cpu,ec] on IBM AIX to LPAR type 'dedicated'
ZBX-14851 Fixed the host visible name in the event details/messages from server when using long utf8 text
ZBX-14887 Fixed max count of records in the single json that proxy can send to the server
ZBX-14972 Fixed the case where data from non-monitored VMware services are not removed from vmware cache
ZBX-14856 Added support for OpenSSL 1.1.1
ZBX-14971 Added note on runtime control with PID numbers larger than 65535 to server, proxy and agentd help messages and man pages
ZBX-14734 Fixed the verification of the assignment of two web checks with the same name from different templates to one host
ZBX-14749 Fixed cloning inherited host prototype on host
ZBX-14663 Fixed calculation of Y zero position in graph
ZBX-14865 Fixed "Field "parent_itemid" cannot be set to NULL" error message while importing multiple templates
ZBX-14925 Added support of user language specific url link in support icon, supported languages: english as default, japanese, russian
ZBX-14854 Improved preprocessor worker performance
ZBX-14798 Fixed incorrect zero rounding in date and time fields
ZBX-14954 Fixed sql error in escalator when working with Oracle, PostgreSQL (less than v9.4) databases
ZBX-14952 Fixed incorrect translation string in en_US locale
ZBX-14757 Fixed fields becoming writable upon form refresh in host prototype form
ZBX-14915 Fixed 'follow redirects' checkbox in web scenario step's dialog
ZBX-14811 Fixed color of the host name in the title of the Screens
ZBX-14776 Fixed sorting when changing status of media type
ZBX-14711 Fixed triggers in trigger overview being filtered by trigger severity and trigger status change time instead of problem severity and problem creation time
ZBX-14689 Fixed updating of the Graph list of host when selecting a group of hosts
ZBX-12217 Removed links to templates with no permissions for templated triggers, trigger prototypes, graphs, graph prototypes, host prototypes and web scenarios
ZBX-14861 Fixed trigger evaluation result not visible in test dialogue when expression is too long
ZBX-14723 Fixed zoom button for time selector in IE browser
ZBX-14888 Fixed table markup on overview and system info pages
ZBX-14652 Fixed plain text Latest data when selecting more than 1 item
ZBX-14618 Fixed host prototype status checkbox resets after adding template
ZBX-14632 Fixed minor typos in comments and tests
ZBX-14834 Fixed icon misplacement in problem view
ZBX-14803 Fixed incorrect profile update causing page filter to sometimes show duplicate values
ZBX-10784 Fixed validation of double/Numeric(float) values
ZBX-14727 Fixed selection of data for trigger overview and graphs if first drop down entry is "none"
ZBX-14615 Fixed Java gateway not to mark host unreachable in case of invalid username and password
ZBX-14585 Fixed JMX endpoint not being included in error message in case of connection errors
ZBX-14650 Fixed item parameters description
ZBX-14764 Fixed crash that could occur when OpenIPMI pollers are configured
ZBX-14882 Fixed crash in vmware collector when receiving invalid xml
ZBX-14908 Fixed crash when processing internal trigger events and deleting triggers at the same time

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 4.0.1.

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