DivX Update is the software updater program which runs in the background of Windows and automatically starts up when your PC boots. It checks for software udpates and automatically downloads and installs them if found.

“DivX is a brand name of products created by DivX, Inc., including the DivX Codec which became popular due to its ability to compress lengthy video segments into small sizes while maintaining relatively high visual quality. DivX Video on Demand (DivX VOD) is DivX's version of digital rights management (DRM), which allows content owners to control distribution in an effort to thwart piracy.”