Hi Rylah,
Thanks for your reply. Just to make sure, I tried the Download Assistant again and it didn’t work. However, with the link you provided I was able to download everything.
I just figured out what the problem was.
For some reason, Little Snitch was blocking all traffic to and from the Unity servers. Strange because I had no problem installing Unity 5.5 just a couple of months ago.
Anyway, with Little Snitch disabled everything worked.
How has this been for Unity 2017? Anyone have similar problems with getting Unity 2017 for Windows? I cannot download the product from the server. Thoughts anyone?