Requiring Individualized Players

An individualized player is one whose digital rights management (DRM) component has been individualized, which is like receiving a security upgrade . An individualized application is one in which the DRM secret value is different from all other applications. With individualized DRM components, a security attack on a DRM system should affect only one computer.

You can require that your Windows Media files be played only on an application that has been individualized by specifying the minimum individualization version number that is required. For the latest individualization information, see the Microsoft Web site https://licenseserver.windowsmedia.com/.

If a consumer tries to play a Windows Media file that requires individualization by using a player that has not been individualized, the player prompts the consumer to get a security upgrade. If the consumer agrees, the player initiates the individualization process and the Microsoft Individualization Service installs the latest version of the security upgrade on the consumer's computer. The player then attempts to play the Windows Media file again.

See Also

• Creating Packaged Windows Media Files
• Issuing Licenses Based on Client Version and Individualization Information
• Using the Sample Pages
• WMRMHeader Object