Hi,
I was having the same problem, error code 30174-4 on running Click to Run installation.
Upon further investigation, I found that I had two simultaneous network connections that routed to the internet. One was a WiFi connection linked to a particular subnet, and the other was a wired ethernet connection linked to a different subnet. Both connections
were capable of reaching the internet, although both would have had different public facing IP addresses.
My best guess is that the streaming requires a consistent connection to one IP address, but the client is load balancing or shifting the connection between the two routes.
When I disconnected the wired connection, and kept only the WiFi connection - the problem was resolved.
For those people experiencing the same issue - check to see if you have a wireless and wired connection, or an active VPN or similar.
Ta
Chris