我的 Visual Studio 2010 Premium 也遇到了同样的问题，同样是在德国的 Windows 7 64 位上.几个小时后，我设法安装了 Service Pack 1.

I had the same problem with my Visual Studio 2010 Premium, also on a German Windows 7 64 bit. After several hours I managed to install the Service Pack 1.

问题是安装程序需要在 x64 计算机上安装 Visual Studio Tools for Office.因此，请通过控制面板(添加/删除程序)自定义 Visual Studio 2010 安装并添加Microsoft Office 开发人员工具 (x64)"功能.添加此功能后，您将能够启动 SP1 安装程序.

The problem is that the setup requires Visual Studio Tools for Office to be installed on x64 machines. So customize your Visual Studio 2010 Installation via the control panel (add/remove programs) and add the feature "Microsoft Office Developer Tools (x64)". After adding this feature, you will be able to start the SP1 Setup.