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9 Upgrade notes for 5.2.0

Zabbix 5.2.0 is not released yet.



Time zone definition

Due to the changes in how time zones are configured:

  • It is now required to set the time zone manually in the frontend when upgrading or in a new installation. The time zone setting from php.ini is no longer used.
  • 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 different from the server time zone this limit may need to be adjusted accordingly so as not to miss important messages.