Release Notes for Zabbix 4.0.17

Zabbix Team is pleased to announce the availability of Zabbix 4.0.17.

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 4.0.17. 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-5490 Added new key vfs.fs.get to collect mounted filesystems information and relevant metrics into json
ZBXNEXT-5239 Added housekeeping of unused/deleted items values in value cache
ZBX-3783 Added strict validation of input parameters in script.get() method

Bug Fixes

ZBX-10240 Fixed maintenance time period update every field validation
ZBX-17164 Fixed file change time in vfs.file.time on Windows
ZBX-17036 Fixed memory leak and wrong type cast; thanks to Yudai Hashimoto for the patch
ZBX-16811 Fixed SQL error during prototype removal by adding select for update locks
ZBX-17002 Added bulk gathering of attributes for Zabbix Java gateway when using attribute discovery
ZBX-16960, ZBX-16961, ZBX-16964 Fixed time of check - time of use issues reported by coverity
ZBX-16902 Fixed providing notifications for devices without audio support
ZBX-17127 Fixed crash on jsonpath function processing
ZBX-17080 Fixed deadlock on maintenance table when using Oracle database
ZBX-17078 Fixed web scenario step allowing to use 0 timeout
ZBX-16907 Fixed icmppingloss counting all after first 400 ping responses as lost
ZBX-16325 Fixed httpstepid validation when its value exceeds int32
ZBX-16997 Fixed duplicate entry errors on 32-bit architecture during item application discovery
ZBX-17102 Fixed scroll bar visibility in svg graph widget configuration form
ZBX-17049 Fixed non well formed numeric value encountered in maintenance
ZBX-16481 Fixed spelling issues in the code
ZBX-1977 Reverted fix for axis labels calculation
ZBX-16894 Fixed dynamic rows losing old input at form error
ZBX-16966 Fixed not operator in correlation function expression

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 4.0.17.

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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