Sitting on a fresh windows install here.
Got Unity Hub immediately and told it to fetch 2018.1.0b4.
It finished downloading, but now it is stuck on Installing.
When I navigate elsewhere inside Unity Hub, and back to Beta Releases, 2018.1.0b4 - Download button is back.
I can download 2018 beta over and over again, but it never installs.
I also fetched 2017.3.0f3.
It finished downloading.
Then there was a small command line window rain, so something happened for sure.
But 2017.3.0f3 is stuck on installing.
However, its shortcut icon was added to desktop.
I checked where it was, and I see it is located inside Unity/Hub folder.
The 2017 folder is populated, while the 2018 folder is completely empty.
I have not launched 2017, so we can use this oppurtunity to troubleshoot a clean windows install.
Maybe Unity Hub is missing something it depends on that is missing on my system or something.
It took some time.
2018 finished downloading, but was put in queue since 2017 was “installing”, so I restarted my computer.
When I started Hub again, 2017 was detected as a finished install.
So I downloaded 2018 again. (With no extras)
Now it is stuck on “installing”, but I am unable to agitate forward the download button again.
I had the same issue. Ran Hub as admin and it cleared it right up. Documentation failed to install, but that was easy to add under “Add component” Not sure if that helps you or not, but it worked for me.
Hum, normally, you do not need to run as admin as the elevated rights are asked on the first install. Did you see the window asking for elevated rights on your first install? (It is asked only on the first install when freshly opening the Hub)