If Methods 1 and 2 fail, Protexis has left corrupted registry keys that respawn the service on reboot. This is the only permanent fix.
Editing the registry can destroy your Windows installation if done wrong. Create a System Restore point first. Corel X5 Remove Protexis-cmd
For many users, this service is a source of frustration. Protexis is a third-party Digital Rights Management (DRM) and licensing service used by Corel to validate software authenticity. While intended to prevent piracy, the service is known to cause performance bottlenecks, software crashes, or "ghost" error messages long after the software has been installed. If Methods 1 and 2 fail, Protexis has