给vs2010安装mvc3，出现如下错误提示：
Installation failed with error code: (0x80070643), "安装时发生严重错误 "。
将vs2010卸载后重装，然后再装vs2010，也出同样错误。
查看安装日志
OS Version = 6.1.7601, Platform 2, Service Pack 1 OS Description = Windows 7 - x64 Ultimate Edition Service Pack 1 CommandLine = e: empext27692setup.exe Using Simultaneous Download and Install mechanism Operation: Installing Package Name = Microsoft ASP.NET MVC 3 Tools Update Package Version = 3.0.20406.0 User Experience Data Collection Policy: Disabled Number of applicable items: 6 Exe (e: empext27692VS10-KB2483190-x86.exe) succeeded. MSI (e: empext27692AspNetWebPages.msi) Installation succeeded. Msi Log: Microsoft ASP.NET MVC 3 Tools Update_20131231_110555814-MSI_AspNetWebPages.msi.txt MSI (e: empext27692AspNetWebPagesVS2010Tools.msi) Installation succeeded. Msi Log: Microsoft ASP.NET MVC 3 Tools Update_20131231_110555814-MSI_AspNetWebPagesVS2010Tools.msi.txt MSI (e: empext27692AspNetMVC3.msi) Installation succeeded. Msi Log: Microsoft ASP.NET MVC 3 Tools Update_20131231_110555814-MSI_AspNetMVC3.msi.txt MSI (e: empext27692AspNetMVC3VS2010Tools.msi) Installation succeeded. Msi Log: Microsoft ASP.NET MVC 3 Tools Update_20131231_110555814-MSI_AspNetMVC3VS2010Tools.msi.txt MSI (e: empext27692NuGet.msi) Installation failed. Msi Log: Microsoft ASP.NET MVC 3 Tools Update_20131231_110555814-MSI_NuGet.msi.txt MSI (e: empext27692AspNetMVC3VS2010Tools.msi) Uninstall succeeded. Msi Log: Microsoft ASP.NET MVC 3 Tools Update_20131231_110555814-MSI_AspNetMVC3VS2010Tools.msi.txt MSI (e: empext27692AspNetMVC3.msi) Uninstall succeeded. Msi Log: Microsoft ASP.NET MVC 3 Tools Update_20131231_110555814-MSI_AspNetMVC3.msi.txt MSI (e: empext27692AspNetWebPagesVS2010Tools.msi) Uninstall succeeded. Msi Log: Microsoft ASP.NET MVC 3 Tools Update_20131231_110555814-MSI_AspNetWebPagesVS2010Tools.msi.txt MSI (e: empext27692AspNetWebPages.msi) Uninstall succeeded. Msi Log: Microsoft ASP.NET MVC 3 Tools Update_20131231_110555814-MSI_AspNetWebPages.msi.txt Final Result: Installation failed with error code: (0x80070643), "安装时发生严重错误 " (Elapsed time: 0 00:13:52).
发现是由于安装NuGet.msi时出错，于时将AspNetMVC3ToolsUpdateSetup.exe解压，运行解压后的文件夹中的各安装程序（除NuGet.msi之外）即可。