wpkg-zabbix_agent/packages/zabbix_agent.xml

<?xml version="1.0" encoding="UTF-8"?>
<packages>
    <package id="zabbix_agent"
             name="Agent de supervision Zabbix"
             revision="39"
             priority="10">

        <variable name="PKG_VERSION" value="4.0.0" />
        <variable architecture="x86" name="MSI" value="%SOFTWARE%\zabbix_agent\zabbix_agent-%PKG_VERSION%_x86.msi" />
        <variable architecture="x64" name="MSI" value="%SOFTWARE%\zabbix_agent\zabbix_agent-%PKG_VERSION%_x64.msi" />

        <check type="uninstall" condition="versiongreaterorequal" path="Zabbix Agent" value="%PKG_VERSION%"/>

        <install cmd='msiexec /qn /i "%MSI%" SERVER=%ZBX_SERVER_IP% RMTCMD=0' />
        <install cmd='netsh advfirewall firewall add rule name="Zabbix Agent" dir=in action=allow protocol=TCP localport=10050 enable=yes remoteip=%ZBX_SERVER_IP%'>
            <exit code="any" />
        </install>
        <install cmd='%COMSPEC% /C sc start "Zabbix Agent"'>
            <exit code="any" />
        </install>

        <upgrade cmd='%COMSPEC% /C sc stop "Zabbix Agent"'>
            <exit code="any" />
        </upgrade>
        <upgrade cmd='"%PROGRAMFILES%\Zabbix Agent\zabbix_agentd.exe" -c "%PROGRAMFILES%\Zabbix Agent\zabbix_agentd.conf" --uninstall'>
            <exit code="1" />
            <exit code="0" />
            <exit code="-1" />
        </upgrade>
        <upgrade cmd='netsh advfirewall firewall del rule name="Zabbix Agent"'>
            <exit code="any" />
        </upgrade>
        <upgrade include="install" />
        <!-- Sometimes on upgrades, the service is not correctly created -->
        <upgrade cmd='"%PROGRAMFILES%\Zabbix Agent\zabbix_agentd.exe" -c "%PROGRAMFILES%\Zabbix Agent\zabbix_agentd.conf" --install'>
            <exit code="1" />
            <exit code="0" />
        </upgrade>
        <upgrade cmd='%COMSPEC% /C sc start "Zabbix Agent"'>
            <exit code="0" />
            <exit code="1056" />
        </upgrade>

        <downgrade include="upgrade" />

        <remove cmd='%COMSPEC% /C sc stop "Zabbix Agent"'>
            <exit code="any" />
        </remove>
        <remove cmd='msiexec /qn /norestart /x "%MSI%"' />
        <remove cmd='netsh advfirewall firewall del rule name="Zabbix Agent"'>
            <exit code="any" />
        </remove>
    </package>
</packages>