Hi @victor_martinez,
Welcome to the Community!
The proxy and firewall is the problem here. You need to have orchestrator address white listed and open the way how Studio/Robot communicates with Orchestrator.
Thank you @Pablito, what should be the address to white list? because via the browser I can logon to the orchestrator. when you say “and open the way” is that about some ports to open?
Regarding ports. If I see it correctly 443 is the port for SSL connection * 3389 - Required for RDP automation, needed for HD Robots and 80 is used for the Webhooks web service.