Hi there,
We're sorry for the trouble as you're seeing Error 202 while opening CC apps. Would you mind sharing the version of the operating system you're on? Error 202 indicates that the downloaded asset could not be downloaded or extracted. Please make sure you have a stable internet connection when trying to update or download any Adobe app.
Please turn off any anti-virus or internet security software installed on your machine for the time being. Try to use the direct link to download the desktop app from the following link: https://helpx.adobe.com/download-install/kb/creative-cloud-desktop-app-download.html
Let us know if that helps.
Regards,
Tarun