"Failed to connect to wu2.frontend.clouddatahub.net."
The installer downloads all necessary installation files from the internet - it sounds like perhaps your firewall is blocking the download of the installer files. Do you have a network admin you can check with?
This isn't related, but... I had issues with the .msi installer yesterday, so I tried the executable instead and it just hung. I rebooted the server and installation went through without a hitch.