9 Upgrade notes for 5.2.0

Zabbix 5.2.0 is not released yet.


Minimum required PHP version

The minimum required PHP version has been upped from 7.2.0 to 7.2.5.


Zabbix session is now stored in a user cookie.

Time zone definition

Due to the changes in how time zones are configured:

  • It is now possible to set the default time zone manually in the frontend when upgrading or in a new installation instead of using php.ini.
  • The limit of time when messages are sent (see 'When active' option in user media) is now based on the user time zone. If the user time zone is changed and is different from the system time zone this limit may need to be adjusted accordingly so as not to miss important messages.