"i can't connect to my adminsitrative console from another pc but https://[IP OCS server]/ocsreport works from the server"
Can you even see the GUI on your web browser from the other computer or you get an error message ?
Are the server and other computer on same network ?
"'i've no inventory for my client in the server but i've send inventory data from my client to the serveur and the server ping response is ok."
1. Stop OCS Inventory service on the Windows machine
2. Enable debug=2 in ocsinventory.ini (default locations is C:\ProgramData\OCS Inventory NG\Agent\) to get more logs for the agent.
3. Restart the OCS Inventory service
4. Show us the OCSInventory.log (same folder as ocsinventory.ini)