VsSDK_sfx.exe 安装出错

在这下载这安装提示：

Error Type: Microsoft.VisualStudio.Sdk.Setup.MissingPrerequisiteException
Error message: You must have Microsoft Visual Studio 2010 installed on your computer before proceeding.

http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=2680

 

如果你安装了sp1，会提示出错，需要下载这个

http://www.microsoft.com/download/en/confirmation.aspx?displaylang=en&id=21835

 

Visual Studio 2010 SP1 SDK

 

搞了好久才搜索到是这问题。