Sometimes you have the loader, but the shortcut is wrong.
A possible complete and helpful version could be: vcds loaderexe not found better
The “VCDS Loader.exe not found” error is a conflict between security software and diagnostic software. By whitelisting the folder, restoring from quarantine, and ignoring the bad advice about runtimes and drivers, you solve the problem permanently. Sometimes you have the loader, but the shortcut is wrong