Release Notes for Zabbix 4.0.27rc1

Zabbix Team is pleased to announce the availability of Zabbix 4.0.27rc1.

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 4.0.27rc1. 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

ZBXNEXT-2480 Removed autocomplete from fields having sensitive data Frontend

Bug Fixes

ZBX-18155 Removed positional macros from item names on 'Web monitoring' page API
ZBX-5842 Fixed ability to detect username existence from unsuccessful login message API Frontend
ZBX-18564 Moved taskid calculation to transaction when creating remote command task Server
ZBX-18487 Increased trapper verbosity for DebugLevel=4 when rejecting sender data Proxy Server
ZBX-18185 Fixed compilation error on Solaris 10 Agent
ZBX-18317 Fixed fatal error when updating only discovered triggers and their properties API
ZBX-18163 Fixed deletion of one last remaining main host interface to show error instead of silently deleting the interface API
ZBX-18058 Updated the list of item keys and their descriptions 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 4.0.27.

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