Finally, I was able to make the Cypress release edX fullstack run in Windows7 Professional. (It works even in Windows7 Professional!; I was told that it must be in Windows7 Enterprise or Windows8)
It is running fine in IE and Firefox and displays the login page or "Welcome to Open edX! with http://preview.localhost as intended. However, the chrome browser displays "ERR_CONNECTION_REFUSED" error message. I would really appreciate if anyone can guide me to debug this problem.
Blessings,
(a debtor)<><