Release Notes for Zabbix 4.2.6

Zabbix Team is pleased to announce the availability of Zabbix 4.2.6.

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 4.2.6. 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

ZBX-9522 Improved frontend messaging usage across multiple browser tabs Frontend

Bug Fixes

ZBX-16501 Fixed log out form being resubmitted when user is already logged back in another tab Frontend
ZBX-16072 Added more strict validation of host, template and proxy names to prohibit leading and trailing spaces API
ZBX-16128 Fixed incorrect action ID in audit log Frontend
ZBX-16354 Fixed incorrect sorting by name with capital letters Frontend
ZBX-16471 For consistency reason changed translation string 'Resolved by user.' to 'Resolved by Inaccessible user.' Frontend
ZBX-16469 Fixed problem that caused impossibility to edit trigger description in problems screen Frontend
ZBX-16362 Fixed keyboard event handling in graph widget hintbox Frontend
ZBX-16474 Fixed 'Request-URI too long' error in problems mass update page Frontend
ZBX-16473 Fixed server-proxy synchronization and pre-preprocessing issues with items that are monitored by server even when their hosts are monitored by proxies Server
ZBX-16184 Updated Zabbix sender man page Documentation
ZBX-16462 Fixed syntax error in SQL query used to calculate SLA in Monitoring->Services API
ZBX-16031 Reworked event update controller, making partly closed set of events closable Frontend
ZBX-16283 Fixed read-only shared dashboard without widgets missing placeholder label Frontend
ZBX-16316 Fixed dashboard widget and slideshow menu popup not updating current refresh rate and fixed a JS error in slideshows Frontend
ZBX-16346 Fixed compilation for Oracle Instant Client v18.5 and higher Proxy Server
ZBX-16146 Added missing mandatory tag "<tags/>" into templates/classic/template_app_zabbix_server.xml Templates
ZBX-16424 Fixed unable to create/update web scenario from Internet Explorer/Edge Frontend

Installation and Upgrade Notes


See Zabbixマニュアル for full details.


See Upgrade procedure for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 4.2.6.

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 営業への問い合わせ for pricing and more details.


Zabbix 4.2 Manual