Release Notes for Zabbix 4.0.29

22 February 2021

Zabbix Team is pleased to announce the availability of Zabbix 4.0.29.

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 http://www.gnu.org/copyleft/gpl.txt.

This document contains the release notes for Zabbix 4.0.29. Download here.

The following sections describe the release in details and provide late-breaking or other information that supplements its main documentation.

---

Bug Fixes

ZBX-18966	Fixed interface related errors when changing proxy type from passive to active API
ZBX-18886	Implemented proper resource cleanup when sender terminates by signal Agent
ZBX-18825	Fixed last year period calculation in service availability report daily mode Frontend
ZBX-18845	Fixed 'UserParameter' possible buffer overrun Agent
ZBX-18449	Reworked trigger API validation API
ZBX-18887	Fixed user session expiration when notification checks are performed in background Frontend
ZBX-18309	Fixed reading log files with NULL character in log line Agent
ZBX-18931	Fixed PHP runtime errors in CLineGraphDraw.php Frontend
ZBX-18872	Fixed system.sw.os[name] for cases without quotation mark in /etc/os-release Agent
ZBX-18885	Fixed SNMP agent item not accepting values that are bigger than 2KB Proxy Server

---

Installation and Upgrade Notes

Installation

See Zabbix documentation for full details.

Upgrade

See Upgrade procedure for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 4.0.29.

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.

• Zabbix Enterprise Support
• Zabbix Training
• Zabbix Development services

---

References

Zabbix 4.0 Manual