It is a download from Microsoft. Actually, with a Microsoft mouse plugged in, the installer will also popup from Windows Update (which is very annoying). Though, you can't find the download in the windows update catalog I am basically trying to install it before Windows update has a chance to try (which will popup an install dialog and wait). The file comes as a setup.exe which doesn't appear to have any switches at all. I can extract the setup.exe to get to the MSI file. The MSI only installs if it is modified to remove a property that says it can only be run from setup.exe. Also canot find any documentation from Microsoft on it. I guess another solution would be to block the update from Windows updates. Any idea on how to exclude it before Windows update runs?