This software is an optional supplement to Microsoft Windows Server Code Name “Longhorn.” In Windows Server "Longhorn" Beta 3, the Streaming Media Services role (which includes the latest version of Windows Media Services) and remote administration tools are not included in Server Manager. To obtain the new features and tools available in Windows Media Services for Windows Server "Longhorn" Beta 3, such as the built-in WMS Cache/Proxy plug-in, you must obtain and run the appropriate Streaming Media Services role installer file on the updated platform.

These Microsoft Update Standalone Package (MSU) files install either 32-bit (x86) or 64-bit (x64) versions (as noted in the file names) of:

• Windows Media Services and the rest of the Streaming Media Services role in Server Manager, on “full” installations of Standard and Enterprise editions of Windows Server "Longhorn" Beta 3
• The Streaming Media Services Server Core role, on “Server Core” installations of Standard and Enterprise editions of Windows Server "Longhorn" Beta 3
• The Windows Media Services snap-in for Microsoft Management Console (MMC) on a computer that is running the Business, Enterprise, or Ultimate edition of the Microsoft Windows Vista operating system