I have Windows 10, 64 bit. I downloaded creative cloud and It was working well till I start to download Illustrator. Installing process for illustrator was stopping at 29%, today I opened my note then creative cloud and I found it making updating and after updating completed, It gives "Download Error"!!
Please read https://forums.adobe.com/thread/1499014
-try some steps such as changing browsers and turning off your firewall
-also flush your browser cache so you are starting with a fresh browser
-check hosts file for blocked entries https://forums.adobe.com/thread/1912777