1. Probably that's the problem, can you point me to a url with the procedure for ESMC?
2. Yes, my corporate proxy is correctly configured in Tools -> Proxy server. "Use direct connection if proxy is not available" turned on too.
One of my biggest confusion about this configuration is where to set the http proxy apache installed with esmc (only for virus database updates) and where to set the corporate proxy for the Endpoint/File Server to connect to internet for activation for example.
I've attached the activation error