The bbo client connects to port 9999 of bbo.bridgebase.com using TCP
If your client just downloaded and ran the upgrade to version 3.6.0, you may have run into a problem with permissions (from a firewall program on your pc)
if you happen to be running one of those personal firewall programs (like Zonealarm, or the ones that come w/some antivirus programs) you need to find a way to tell the firewall program to allow c:\bridge base online\netbridgevu.exe to access the internet
Some of these &**& firewalls fail silently when an application program changes (like BBO would have, as part of the upgrade). You'd need to find a way to configure the firewall to allow netbridgevu.exe to access the internet.
Another thing you can try is to access
http://bridgebase04.bridgebase.com:81/
If you can access this web page, your pc can connect to our server.
The next question is, in that case, why not on port 9999, since connecting via port 81 succeeded?
If you have changed nothing on your pc, and can access the web site above and have recently upgraded to 3.6.0 and have not accessed BBO since, most likely issue is a personal firewall