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You can try this :
Please rename OOBE to OOBEE.OLD Folder from the following location
location in Window C:\Program Files (x86)\Common Files\Adobe
location in Mac: library>.application support>>Adobe>> OOBE
After renaming the OOBE folder please uninstall Adobe creative cloud from the cleaner tool and re-installed the product from from www.creative.adobe.com/apps
PS: Please uninstall Creative cloud connection if you see in Cleaner tool.
As the above discusson also mentions renamimg, Please disable the firewall of the system & network & then retry.
You can also refer this link for more input: http://helpx.adobe.com/creative-cloud/kb/troubleshoot-cc-installation- download.html
Incase the error still persists, then the next best step would be to review your installation logs to determine the exact point of failure.
Please see Troubleshoot with install logs | CS5, CS5.5, CS6 - http://helpx.adobe.com/creative-suite/kb/troubleshoot-install-logs-cs5 -cs5.html for information on how to locate and interpret the
installation log files.
Please feel free to inbox log file privately.