Hi
I am also trying to use DAX, but I am facing an issue when I start the VM. After clicking the "Start a Desktop Session" for the DAX HOL VM like below, I am asked to put the user id and password.

According the e-mail where I received when I register my account, I put the id and password and it worked fine. It opens a window which is a VNC-like desktop session, but it immediately closes the session somehow.
In addition, nothing happened when I click the "Start an Xterm Session" button. Does anyone experience the same issue like me? I am currently using Windows 7(OBI), FireFox 45.2.0 and Java 1.8.0_101.
By the way, my account has total five VMs, but I don't know what the differences is. Can you provide me with some pointers?
Thanks,
Jeongseob