Hi,
Please perform following steps to fix this issue.
1) Close all adobe related processes in activity monitor (Creative cloud, Core sync, CC library, services for adobe desktop app, adobe desktop service, Adobe IPC broker, AAM updater)
2) Navigate to following locations and assign the current user full permissions to adobe folders. To navigate click go from menu bar at then click goto.. type /Library/application support/ and click go.
3) To assign the permission right click on adobe folder and click Get info.. A property window will open. Then click on lock symbol to enable editing. Then click + sign to add your username. Then change read only to read and write. Then click gear symbol at the bottom and click apply to enclosed items and click ok.. Proceed to next step then.
3) Navigate to following location /Library/application support/adobe and rename aamupdator to aamupdator.old and oobe to oobe.old .
4) Navigate to ~/Library/application support /adobe/oobe and rename aamupdator to aamupdator.old and oobe to oobe.old .
5) Open application library and delete creative cloud,
6) open utilities from application library itself and delete Adobe application manager and creative cloud
7) Install creative cloud from following link https://creative.adobe.com/products/creative-cloud
8) Launch cc app and it should work fine