Fetching a KB hotfix in C#

I'm trying to fetch a certain hotfix (KB976477) from a C# program. Using the WUApi (Windows Update Agent Api) is not working so far because the IUpdateSearcher.Search method only provides Software and Drivers which would be available via the norma开发者_Go百科l Windows Update. Given the name of the API this is not that much of a surprise...

Any idea how to fetch and install the aforementioned KB hotfix? Making an installer and giving the hotfix as a prerequesite is not really an option.

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You won't be able to do this in an automated way. That hotfix is not available for download. You must contact MS directly to obtain it, as can be gleaned from the hotfix description.