Visual Studio 2015 XAML设计器失败，出现System.Exception

Question

我正在Windows 10 Pro官方版本上运行Visual Studio 2015社区。安装Visual Studio时没有任何问题或错误，但XAML设计器因以下错误而崩溃：

System.Exception
Install failed. Please contact your software vendor.

Deployment Register operation with target volume C: on Package 74da95b4-525a-49a9-99a1-472cc815a148_1.0.0.0_x86_NorthAmerica_8wekyb3d8bbwe from:  (AppXManifest.xml)  failed with error 0x8E5E0408. See http://go.microsoft.com/fwlink/?LinkId=235160 for help diagnosing app deployment issues.
   at Microsoft.VisualStudio.DesignTools.HostUtility.Platform.AppContainerProcessDomainFactory.CreateDesignerProcess(String applicationPath, String clientPort, Uri hostUri, IDictionary environmentVariables, Int32& processId, Object& processData)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.ProcessIsolationDomain..ctor(ProcessDomainFactory factory, IIsolationBoundary boundary, AppDomainSetup appDomainInfo, IIsolationTarget isolationTarget, String baseDirectory)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)
   at Microsoft.VisualStudio.DesignTools.HostUtility.Platform.AppContainerProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.Initialize()
   at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.CreateInstance[T](Type type)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedObjectFactory.Initialize()
   at Microsoft.VisualStudio.DesignTools.DesignerHost.Services.VSIsolationService.CreateObjectFactory(IIsolationTarget isolationTarget, IObjectCatalog catalog)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolationService.CreateLease(IIsolationTarget isolationTarget)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolationService.CreateLease(IIsolationTarget isolationTarget)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.CreateLease(IIsolationTarget isolationTarget, CancellationToken cancelToken, DesignerServiceEntry& entry, IServiceProvider serviceOverrides)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.IsolatedDesignerView.CreateDesignerViewInfo(CancellationToken cancelToken)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.InvokeWithCulture[T](CultureInfo culture, Func`2 func, CancellationToken cancelToken)
   at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.<>c__DisplayClass10_0`1.<StartTask>b__0()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()

我正在开发Windows Phone 8.1应用程序，但该问题与我的应用程序无关，因为我试图创建一个空白的Windows 10 UWP应用程序和一个空白的Windows 8.1 Universal应用程序，而在尝试打开W​​indows Phone 8.1应用程序时都出现相同的错误默认MainPage.xaml的XAML设计器。

我还尝试使用它的另一个实例调试Visual Studio，但是它没有引发任何异常。

这似乎是XAML设计器中的错误，但是如果有人知道可行的解决方法，请与我分享。

提前致谢！

编辑：

该问题已由Visual Studio 2015 Update 1解决

Answer 1

您需要打开开发者模式。转到“设置”应用程序 --> Update and Security-->For Developers菜单。请参考下面的截图：