Download
http://www.zabbix.com/download
Configure
C:\Zabbix\conf\zabbix_agentd.win.conf
Server=zabbix.example.com ServerActive=zabbix.example.com Hostname=win1.project.example.com
Read the manual
https://www.zabbix.com/documentation/2.4/manual/appendix/install/windows_agent
Example
after download and unzipt in c:\Zabbix
C:\Zabbix\bin\win64>
zabbix_agentd.exe --config C:\Zabbix\conf\zabbix_agentd.win.conf --install zabbix_agentd.exe --start
C:\Zabbix\bin\win64>
zabbix_agentd.exe --config C:\Zabbix\conf\zabbix_agentd.win.conf --uninstall
Firewall
allow zabbix_agentd.exe