When I try to log in to my Horizon Workspace through Mozilla Firefox 28. I see only "Signing in" label. After 3-4minutes I obtain error page "502 Bad Gateway - The server returned an invalid or incomplete response".
When I use Internet Explorer, Google Chrome or Opera in newest versions, everything works fine. I am logged in in a few seconds.
Horizon Workspace version is 220.127.116.110 Build 1653313, and operating system with internet browsers is Windows 7 SP1 64bit.