Local License Store

[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

When a DRM license is delivered to the client computer it is put into the local license store. This is a protected file on the hard disk that contains all the licenses issued to the user along with other DRM information.

You can manipulate data in the local license store in a few, limited ways by using the Windows Media DRM Client Extended APIs.

In addition to the local license store, some objects make use of a temporary license store. A license in a temporary store exists only for a short period of time. However, some licenses that begin in a temporary store can be saved to the regular local license store.

Concepts