If the Summary doesn't answer your question, and perhaps the reason for searching for this article, then perhaps a short explanation of CA UI > System > Licensing may be in order.
Manual installation of the Content Analysis base license only includes the necessary elements to operate and if one is configured, send data to a sandboxing service. Anti-virus products are managed with a subscription-based license that requires that your Content Analysis appliance is connected to the Internet to retrieve and use.
Content Analysis systems check the cloud for AV updates several times a minute. During that probe, the license, engine, and pattern files for each AV product you have purchased is checked and verified.
Part of that check is a verification in Blue Coat's back-end database that the base license attached to a serial number, is correctly linked to the purchased AV products. That includes WhiteListing, which is also a subscription product similar to AV products.
Note: For information specific to linking AV & WhiteListing subscriptions to the VA or appliance serial number at https://bto.bluecoat.com please refer to KB 000022089, Content Analysis System Virtual Appliance Birth Certificate which can be read at this URL: https://na3.salesforce.com/articles/Solution/Content-Analysis-System-Virtual-Appliance-Birth-Certificate