Release Notes for Zabbix 4.0.5

Zabbix Team is pleased to announce the availability of Zabbix 4.0.5.

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 4.0.5. 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-5046 Added non-destructive resizing and reordering of dashboard widgets Frontend
Added monitoring of internal metrics from an external Zabbix instance Frontend Agent Installation Proxy Server Templates

Bug Fixes

ZBXNEXT-4941 Changed overflow statements to execute one by one for Oracle for better performance Proxy Server
ZBX-15664 Fixed "Undefined index" errors on maps with enabled automatic icon mapping Frontend
ZBX-15667 Fixed wrong default Zabbix server status for new installation Installation
ZBX-15512 Fixed performance issues and significant memory consumption on several pages which contains host popup menus Frontend
ZBX-15512 Fixed performance issues in "Problems by severity" widget Frontend
ZBX-15593 Fixed database upgrade patch to stop upgrade on commit failure Proxy Server
ZBX-15611 Fixed crash in configuration syncer when there are groups with same name and when removing preprocessing steps from item Server
ZBX-15242 Fixed value trimming and duplicate catching in SVG graph pattern fields Frontend
ZBX-15250 Fixed selection box height calculation in classic graph Frontend
ZBX-15316 Fixed problem with socket inheritance preventing Windows agent from restarting under certain circumstances Agent
ZBX-15379 Fixed -Wimplicit-fallthrough warnings when compiling with GCC 7 and -Wextra Agent Proxy Server
ZBX-15179 Fixed when message about blocking user login is displayed only on next login attempt API Frontend
ZBX-15494 Fixed handling numbers that written in scientific notation Agent Server
ZBX-15533 Fixed cutting and trimming event tags and values Server
ZBX-15442 Fixed reporting idle time in datasender's process state information Proxy
ZBX-15424 Fixed when multiselect doesn't trim values and recognizes untrimmed values as new ones Frontend
ZBX-14644 Fixed maintenance time periods "start_date" field being reset to "1920" instead of DB default value when updating via edit form Frontend
ZBX-15271 Added link to documentation in all man pages Documentation
ZBX-15422 Fixed SQL errors when linked template have item prototype with equal key as host item API
ZBX-15456 Fixed incorrect style property in Monitoring->Problems; removed unused id from filter form Frontend

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 4.0.5.

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