Release Notes for Zabbix 4.0.26rc1

Zabbix Team is pleased to announce the availability of Zabbix 4.0.26rc1.

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 4.0.26rc1. 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-18464 Fixed javascript Uncaught TypeError when clicking on disabled multiselect item Frontend
ZBX-18411 Set maxQueryMetrics default values for vcenter depending on its version Server
ZBX-18438 Fixed missing asterisk mark for "timeout" field in item, item prototype and LLD rule edit forms Frontend
ZBX-18327 Fixed undefined index when invalid URL is given Frontend
ZBX-17178 Fixed multi-line value truncation in snmp lld Proxy Server
ZBX-18462 Fixed inconsistent auto-registration behaviour for hosts without metadata on Oracle DB compared to other databases when using Zabbix proxy Proxy Server
ZBX-18364 Fixed inconsistency with autoregistration behaviour for hosts without metadata on Oracle compared to other databases Proxy Server
ZBX-18365 Added Fping 5.0 support to Zabbix Proxy Server
ZBX-17493 Added discarding of incoming values outside history/trends storage periods on server Server
ZBX-18343 Fixed in screen "host issue" problem stay even after problem resolved Frontend

Installation and Upgrade Notes


See Zabbix documentation for full details.


See Upgrade procedure for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 4.0.26.

Commercial support

Zabbix Company provides a full range of Professional Services. We also provide trouble-free Upgrade Service for easy migration from earlier versions of Zabbix. Please Contact sales for pricing and more details.


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