thinking it is the free version. When the trial expires, the software asks for a license key and may stop updating.
Comodo Internet Security (CIS) Pro is a paid security suite that builds upon the same core protection engine as the free version, . While the Pro edition typically requires a paid license key ($29.99/year), the underlying security features are actually available for free through the Premium edition. Key Differences in Versions comodo internet security pro license key full free
Regarding the license key, Comodo Internet Security Pro typically requires activation with a valid license key to access its full features. However, I found that Comodo offers a free version of their Internet Security software, which provides basic protection. thinking it is the free version