Force Quit all Adobe related processes from Activity Monitor.
Click on the Finder and look for the options listed next to Apple Icon located at the top left corner of the Desktop screen and click on "Go" menu button and select "Utilities" option.
Locate Adobe Creative Cloud and Adobe Application Manager folder under Utilities window and trash both folders.
2) Trash Adobe Creative Cloud from Applications well.
Click on the below link and download & run Adobe Cleaner tool :
Select the option "Adobe Application Manager for Mac OS X 10.6" and then click on "Clean up Selected" .
https://helpx.adobe.com/content/help/en/creative-suite/kb/cs5-cleaner-tool-installation-pr oblems/_jcr_content/main-pars/accordion_container_1/accordion-par/accordion-item-1/accord i on-item-par/procedure/proc_par/step_3/step_par/download/file.res/AdobeCreativeCloudCleane r Tool.zip
4) Click on the below link and download Creative Cloud Installer file and use the same to install the Creative Cloud Desktop application.