To fix this on Windows: 

• First sign out of the Creative Cloud Desktop app, then close the application
  
  
• Navigate to:  "C:\Program Files (x86)\Common Files\Adobe\OOBE\Configs"
  
  
• Find the file called "ServiceConfig.xml" - right-click on it, and select Rename and change the name to "ServiceConfig.xml.orig" 
  
  
• Download this replacement ServiceConfig.xml file (right click on the link, and select "Save Link As"), and copy it into the "Configs" directory (same directory as the original file)
   
• Reboot your computer
  
  
• After rebooting, re-launch the Adobe Creative Cloud desktop app, and you should no longer get the "You don't have access to manage apps" error. 

To fix this on Mac: 

• First sign out of the Creative Cloud Desktop app, then close the application
  
  
• Navigate to:  Macintosh HD > Library > Application Support > Adobe > OOBE > Configs 
  
  
• Rename the file called "ServiceConfig.xml" to "ServiceConfig.xml.orig"
  
  
• Download this replacement ServiceConfig.xml file, and copy it into the "Configs" directory (same directory as the original file)
   
• Reboot your computer
  
  
• After rebooting, re-launch the Adobe Creative Cloud desktop app, and you should no longer get the "You don't have access to manage apps" error.