我安装了具有有效许可证(Visual Studio 订阅)的 Visual Studio 2019 企业版(VS 2019 16.1.4)，它运行良好。

突然之间，当我尝试打开项目或项目中的任何文件时，我收到以下错误。



所以我尝试使用 Visual Studio 卸载程序卸载，当我选择卸载程序时，它会自动更新，当我现在打开卸载程序时，它说



当我点击确定时，它说你还没有安装任何东西，它只有安装 VS 2019 16.2.0 的选项。

即使我尝试安装 VS 2019 16.2.0 ，我也会看到错误

"Visual Studio cannot be installed to a nonempty directory 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise'."

请帮我解决错误。

làm mới

=====================
12-08-2019 06:31:09 PM
Recoverable
System.AggregateException: One or more errors occurred. ---> System.Runtime.InteropServices.COMException: Element not found. (Exception from HRESULT: 0x80070490)
   at Microsoft.VisualStudio.Setup.Configuration.ISetupConfiguration.GetInstanceForCurrentProcess()
   at Microsoft.VisualStudio.ProjectSystem.VS.DotNetCoreProjectCompatibilityDetector.d__44.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndwindowNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.VS.DotNetCoreProjectCompatibilityDetector.d__43.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndwindowNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.VS.DotNetCoreProjectCompatibilityDetector.d__47.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndwindowNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.VS.DotNetCoreProjectCompatibilityDetector.<b__40_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndwindowNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.ProjectMultiThreadedService.<>c__DisplayClass32_1.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.VisualStudio.ProjectSystem.CommonProjectSystemTools.Rethrow(Exception ex)
   at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.b__0()
   at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.g__action|0()
   at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 )
   --- End of inner exception stack trace ---
---> (Inner Exception #0) System.Runtime.InteropServices.COMException (0x80070490): Element not found. (Exception from HRESULT: 0x80070490)
   at Microsoft.VisualStudio.Setup.Configuration.ISetupConfiguration.GetInstanceForCurrentProcess()
   at Microsoft.VisualStudio.ProjectSystem.VS.DotNetCoreProjectCompatibilityDetector.d__44.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndwindowNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.VS.DotNetCoreProjectCompatibilityDetector.d__43.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndwindowNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.VS.DotNetCoreProjectCompatibilityDetector.d__47.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndwindowNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.VS.DotNetCoreProjectCompatibilityDetector.<b__40_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndwindowNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.ProjectMultiThreadedService.<>c__DisplayClass32_1.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.VisualStudio.ProjectSystem.CommonProjectSystemTools.Rethrow(Exception ex)
   at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.b__0()
   at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.g__action|0()
   at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 )<---

===================

我开始非常频繁地(每周两次)面对这个问题，唯一的解决方案是每次都重新安装。所以暂时将VS降级到2017年。

1 Câu trả lời

要卸载VS 2019，请按照以下步骤清理已安装的VS并重新安装:

• 查看您的计算机上是否有此文件:“%programfiles(x86)%\Microsoft Visual Studio\Installer\resources\app\layout\InstallCleanup.exe”

• 如果是这样，请使用 -full 参数从管理员命令提示符启动它:
InstallCleanup.exe -full

• 如果没有，请手动删除“%programfiles(x86)%\Microsoft Visual Studio\Installer”文件夹

• 重新启动新下载的 vs_enterprise.exe(或 vs_professional.exe 或 vs_community.exe...)

• 允许安装安装程序的第一步

• 一旦安装程序出现并且您可以看到工作负载选择(.net 桌面等)，请关闭它

• 启动相同的InstallCleanup.exe 来清理旧版本的VS

• 然后重新运行 VS 安装程序进行安装

然后请让我们知道这是否适合您。

关于visual-studio - Visual Studio 安装程序缺少选项值 : InstallPath - Visual Studio 2019，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57216284/