[CodeReviewer] I/O error while communicating with HTTP server

During the GUI client installation I got following error message:        I/O error while communicating with HTTP server: The server codecollaborator.mycompany.com failed to respond----whats's the issue with this?  I'm installing Windows 64-bit Client Installer with Win 7 64 bit, and JDK 1.7.0_25 was installed in this box.