Steps to reproduce:

1. Install Zabbix Agent 2 with MSI:
   SET ZBXDIR=%ProgramFiles%\Zabbix
   SET ZBXCONF=%ZBXDIR%\zabbix_agent2.conf
   FOR /F "tokens=* USEBACKQ" %g IN (`"PowerShell.exe -nologo -command ([System.Net.Dns]::GetHostByName(($env:computerName))).Hostname.ToLower()"`) do (SET "HNAME=%g")

msiexec /l* log.txt /i zabbix_agent2-5.4.2-windows-amd64-openssl.msi /qn^
LOGTYPE=file^
LOGFILE="%ZBXDIR%\zabbix_agent2.log"^
SERVER=zabbix-proxy-01.test.com^
SERVERACTIVE=zabbix-proxy-01.test.com^
HOSTNAME="%HNAME%"^
TIMEOUT=30^
ENABLEPATH=1^
INSTALLFOLDER="%ZBXDIR%"

Result:

1. Check config:
   ...
   1. 1. Option: LogFile
2. Log file name for LogType 'file' parameter.
   #
3. Mandatory: yes, if LogType is set to file, otherwise no
4. Default:
5. LogFile=c:\zabbix_agent2.log

1. 1. 1. Option: LogFileSize
         ...

Expected:
LogFile=C:\Program Files\Zabbix\zabbix_agent2.log