After installing CA Spectrum on Windows, when a user tries to launch the Spectrum Control Panel, an error shows noting "The program can't start because the libPort.dll is missing from your computer."
The problem is that the Windows operating system does not re-read the environment variables and incorporate them when requested by the CA Spectrum installer without a new login. As a result, some DLLs are not loaded into the required library path.
The solution is to either log out and log back in or reboot the system.