I click on the provided link (http://cs50.edx.org/vmware) and wind up at this page (https://x.cs50.net/auth/) which is blank. I have enabled cookies but this hasn't changed the redirect. Can't think of what else to try. Suggestions would be much appreciated!
The link redirects you so as to log-in through openid.edx.org and then automatically sends your credentials to https://harvard-cs50x.onthehub.com, where you already get signed-in.
It is strange, this is the direct link to the WMware software center for cs50x:
Once there click in Sign In on the column Single Sign-On. This should redirect you to the edx open id login page, log in with your edx credentials and then you should be automatically logged in the WMware software center for cs50x.