visual-studio - Visual Studio "15"预览版卸载

Question

我正在尝试安装 VS“15”预览版 5，我已经启动了新的安装程序，现在它说我必须卸载以前的版本(预览版 4)。
当我单击删除按钮时，卸载过程失败，这是日志文件中的错误:

2016-10-05T23:20:59 : Verbose : Getting installed product. [installerId: SetupEngine, installationId: 9554cc50, productId: Microsoft.VisualStudio.Product.Enterprise]

2016-10-05T23:20:59 : Verbose : Calling SetupEngine.Installer.UninstallProduct. [installPath: 'C:\Program Files (x86)\Microsoft Visual Studio\VS15Preview']

2016-10-05T23:20:59 : Error : Failed to get installed product. [installerId: SetupEngine, installationId: 9554cc50, productId: Microsoft.VisualStudio.Product.Enterprise, error: Sequence contains more than one element at    at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
   at Microsoft.VisualStudio.Setup.Cache.CommonExtensions.GetProduct(IInstance instance, Boolean installedOnly)
   at Microsoft.VisualStudio.Setup.InstalledProductsProviderService.CorrectChannelInformation(Instance instance)
   at Microsoft.VisualStudio.Setup.InstalledProductsProviderService.GetInstalledProductForPathImpl(String path)
   at Microsoft.VisualStudio.Setup.InstalledProductsProviderService.GetInstalledProductImpl(InstalledProductSummary productSummary)
   at Microsoft.VisualStudio.Setup.InstalledProductsProviderService.GetInstalledProduct(InstalledProductSummary productSummary)]

2016-10-05T23:20:59 : Verbose : SetupEngine.Installer.UninstallProduct reported error.  [InvalidOperationException: Sequence contains more than one element at    at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
   at Microsoft.VisualStudio.Setup.Cache.CommonExtensions.GetProduct(IInstance instance, Boolean installedOnly)
   at Microsoft.VisualStudio.Setup.Cache.CacheRepository.GetAvailablePackages()
   at Microsoft.VisualStudio.Setup.Engine.Initialize()
   at Microsoft.VisualStudio.Setup.Engine.Uninstall(CancellationToken token)
   at Microsoft.VisualStudio.Setup.InstallerService.UninstallProductImpl(InstalledProductSummary productSummary, TelemetryContext telemetryContext, CancellationToken cancellationToken)
   at Microsoft.VisualStudio.Setup.InstallerService.UninstallProduct(InstalledProductSummary productSummary, TelemetryContext telemetryContext, CancellationToken cancellationToken)]

2016-10-05T23:21:00 : Verbose : Getting installed product summaries. [installerId: SetupEngine]

2016-10-05T23:21:00 : Verbose : Getting product summaries. [installerId: SetupEngine]

有人能帮我吗？

Answer 1

在尝试预览 5 之前，您必须卸载所有以前版本的 Visual Studio“15”，您可以通过 Visual Studio 安装程序或从控制面板使用“卸载程序”卸载以前的版本。当 Visual Studio 安装程序无法工作时，我们可以手动删除 Visual Studio，如下所示:

关闭 Visual Studio 安装程序

删除文件夹 %ProgramData%\Microsoft\VisualStudio\Packages\

删除 Visual Studio 文件夹安装文件夹(通常在 %ProgramFiles(x86)%\Microsoft Visual Studio\VS15Preview 下)

之后，先前的安装将被删除。再次启动 Visual Studio Preview ‘15’ 的 Visual Studio Installer 进行安装
有关 VS 预览版 ‘15’ 安装的更多详细信息，您可以查看 here .