DIFx Driver Store
The DIFx driver store is a repository for driver packages that is located on the computer's hard disk drive and is managed by Microsoft Windows Driver Install Frameworks (DIFx). DIFxApp, DPInst, and other DIFx tools use the driver store to store and retrieve driver packages.
Note When the DIFx tools are executed on systems that are running Windows Vista or later version of Windows, DIFx does not use the DIFx driver store. Instead, it uses the driver store that is managed by the operating system.