This particular "Server Busy" error is not actually anything to do with the internet, it's a poorly labeled Windows error and usually comes up when an app uses WBEM or WMI (Windows Management Interface) and they don't respond in time.

It could still be caused by BCC Live anyway. I block that with my AV software unless I need it for some reason.

This tool might help-- https://technet.microsoft.com/en-us/.../ff404265.aspx