原文地址：http://blogs.msdn.com/b/astebner/archive/2012/02/29/10274694.aspx
- Download and install the latest version of the Games for Windows – LIVE Redistributable from http://www.xbox.com/en-US/LIVE/PC/DownloadClient
- If you are installing the Windows Phone SDK 7.1, re-run setup and choose to repair it. This will re-run the previously failing XNA Game Studio installers and they should install correctly this time.
- If you are install a standalone XNA Game Studio product, re-run setup and it should install correctly this time.