This pops up over and over.

Try manually deleting preferences, unistall/install again

https://helpx.adobe.com/photoshop/using/preferences.html#:~:text=original%20location.-,MANUALLY,-Manually%20removing%20preferences

Do I understand correctly that this is unrelated to Photoshop but affects the CC app? 

If the issue persists you could try uninstalling and using the cleaner tool befor re-installing. 

https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html