You can also use a third-party tool, such as Revo Uninstaller, to remove ProtexisCMD.
The search results were a mix of corporate troubleshooting guides and sketchy tech forums. He skipped the official support pages—they usually advised a full reinstall, which he didn't have time for.
Navigate to: C:\Program Files (x86)\Common Files\Protexis\License Service\ . Locate the file named PsiKey-15001.dll (or similar). this file.
Navigate to the Protexis folder, typically located at: C:\Program Files\Common Files\Protexis\License Service Locate the file and copy (do not move) it.
The DLL renaming method mentioned above is a clean way to handle the service without downloading external software.