Solution
If your server uses a proxy server to mediate the connection to the Internet, the proxy server settings must be configured in order to provide regular updates of NOD32. This is also necessary in order to submit statistical info and suspicious files using the ThreatSense.Net technology.
To edit the proxy server settings, open the configuration file nod32.cfg and search for the section:
proxy_addr = proxy_port = 3128 proxy_username = proxy_password =
Enter the proxy server, username, password and IP address.