If you still want to try:
You have no technical skill with regedit or terminal, or you’re on macOS Catalina+. Instead, boot a Windows virtual machine for CS5. Adobe Cs5 Clean Script Download
As of this writing, the safest active URL is archived on (search “Solved: CS5 Clean Script Adobe Community”). Look for the post by Jeffrey Tranberry – that file is original, signed, and safe. If you still want to try: You have
: Removes legacy files, folders, and registry keys that interfere with Adobe installations. : Supports products, as well as legacy CS3 and CS4 entries. Primary Function or you’re on macOS Catalina+. Instead
: Targets deep-seated files and registry keys that manual deletion often misses. How to Download and Use the Tool