If you are running Windows XP or Windows Server 2003, modern MTP devices (like a 2010-era Android phone or a last-generation Zune) will not function properly without WMF 11. The redistributable adds MTP-aware media handling that was absent in earlier versions of Windows Media Format (9 Series).
The official package is available from Microsoft Download Center as WindowsMedia11-KB929399-v2-x64-INTL.exe (64-bit) or WindowsMedia11-KB929399-v2-x86-INTL.exe (32-bit).
is a core software package that provides the essential runtime components for handling digital media on Windows operating systems . It is primarily used to enable support for Windows Media Audio (WMA) and Video (WMV) codecs, as well as the Media Transfer Protocol (MTP) . Core Purpose and Functionality
You connect a digital camera that records video as WMV (common in older Kodak, Panasonic, and Samsung models). Explorer shows generic icons instead of video thumbnails. This indicates the thumbnail extractor component of WMF is missing or outdated.
After reboot, connect your portable media player. Windows should now recognize the device as an MTP class device, and you will be able to sync audio/video content.
WMF 11 includes an indexer for ASF files. Convert the files using an ASF indexer tool or use Windows Media Player to re-sync them, which builds proper indexes.
WMF 11 is a runtime component set developed by Microsoft. It acts as the backbone for handling Advanced Systems Format (ASF) files, which are the containers for Windows Media Audio (WMA) and Windows Media Video (WMV). WMF 11 includes:
