To perform a silent uninstall, you need to type the command instructions on the command line.
Example:
[Root Directory]\CADWorxSetup.exe /Uninstall /silent
Ensure you are in the directory of the CADWorxSetup.exe file.
/Uninstall
Runs the uninstall.
/silent
Specifies that you are running a silent uninstall. With the silent uninstall, the uninstall dialog boxes do not display, and the uninstall runs in the background.