I have completely turned off Windows Firewall for both public and private. I have also disabled Real Time Scan on Windows Defender.
No change.
To my knowledge, I have no other firewalls or A/V installed.
FWIW: I keep coming back to one idea: I have Windows Ultimate ‘N’… which means that it does -not- come pre-installed with IE. I never use IE. But I found out when I set up the machine that I had to install IE in order to get iLok to work (which seems to require IE for some reason.)
Next?
—JC