I ran into an issue where a .dll file (easyredirect64.dll) was causing some issues. Notably; it would cause explorer.exe to hang, and would cause all my Creative Cloud programs to crash immediately on startup. Before deleting the file, the only solution was to uninstall Creative Cloud plus all the apps and reinstall before the problem inevitably happened again. I've since deleted the file, and now explorer works fine, but when I try to re-install Creative Cloud, something peculiar happens. The installer unpacks and goes through most of its installation fine, but when it gets to the last step it just...Closes. The process is still visible in Task Manager, but nothing happens. An item is created in the start menu, but pressing it does nothing, nor can I uninstall it in Programs and Features. The only way to remove it is to restart Explorer, as it locks a CoreSync .dll whenever this happens (CoreSync_x64), and then manually delete all the files. I am running Windows 10 64x.
Sounds like there is some software on system which is not letting CC App run. Can you try booting into safe mode with network support and see if Creative Cloud app runs fine. If it does, I would be looking into running programs and service and try closing them one by one.