我有一个干净的Windows 2012 R2与SharePoint 2016.安装Visual Studio社区2017，当我尝试使用VS更新安装JustInTime调试器时，我收到以下错误：
The product failed to install the listed workloads and components due to one or more package failures.
Incomplete components
Just-In-Time debugger (Microsoft.VisualStudio.Component.Debugger.JustInTime,version=15.0.26208.0)
You can search for solutions using the information below, modify your selections for the above workloads and components and retry the installation, or remove the product from your machine.
Following is a collection of individual package failures that led to the incomplete workloads and components above. To search for existing reports of these specific problems, please copy and paste the URL from each package failure into a web browser. If the issue has already been reported, you can find solutions or workarounds there. If the issue has not been reported, you can create a new issue where other people will be able to find solutions or workarounds.
Package 'Microsoft.VisualStudio.Debugger.JustInTime,version=15.0.26424.2' failed to install.
Search URL: https://aka.ms/VSSetupErrorReports?q=PackageId=Microsoft.VisualStudio.Debugger.JustInTime;PackageAction=Install;ReturnCode=1
Impacted components
Just-In-Time debugger (Microsoft.VisualStudio.Component.Debugger.JustInTime,version=15.0.26208.0)
Log
C:\Users\Administrator\AppData\Local\Temp\dd_setup_20170622105625_003_Microsoft.VisualStudio.Debugger.JustInTime.log
Details
Command executed: "c:\windows\syswow64\\windowspowershell\v1.0\powershell.exe" -ExecutionPolicy Bypass -InputFormat None -NoLogo -NonInteractive -NoProfile -Command "$ErrorActionPreference="""Stop""";$VerbosePreference="""Continue""";$Action="""Modify""";$AppId="""9180617e""";$Packages="""Microsoft.VisualStudio.Component.CoreEditor,Microsoft.VisualStudio.Component.NuGet,Microsoft.Net.Component.4.6.1.SDK,Microsoft.VisualStudio.Component.TypeScript.2.2,Microsoft.VisualStudio.Component.JavaScript.TypeScript,Component.WebSocket,Microsoft.VisualStudio.Component.JavaScript.Diagnostics,Microsoft.VisualStudio.Component.Roslyn.Compiler,Microsoft.VisualStudio.Component.Static.Analysis.Tools,Microsoft.VisualStudio.Component.Roslyn.LanguageServices,Microsoft.VisualStudio.Component.PortableLibrary,Microsoft.VisualStudio.Component.SQL.CLR,Microsoft.VisualStudio.Component.VisualStudioData,Microsoft.VisualStudio.Component.AppInsights.Tools,Microsoft.Component.ClickOnce,Microsoft.Net.Component.4.5.TargetingPack,Microsoft.VisualStudio.Component.Debugger.JustInTime,Microsoft.Component.MSBuild,Microsoft.Net.Component.4.6.1.TargetingPack,Microsoft.Net.ComponentGroup.DevelopmentPrerequisites,Microsoft.VisualStudio.Component.TextTemplating,Microsoft.VisualStudio.Component.ManagedDesktop.Core,Microsoft.Net.Component.4.TargetingPack,Microsoft.Net.Component.4.5.2.TargetingPack,Microsoft.VisualStudio.Component.IISExpress,Microsoft.VisualStudio.Component.WebDeploy,Microsoft.VisualStudio.Component.SQL.NCLI,Microsoft.VisualStudio.Component.SQL.LocalDB.Runtime,Microsoft.VisualStudio.Component.SQL.ADAL,Microsoft.VisualStudio.Component.Common.Azure.Tools,Microsoft.VisualStudio.Component.SQL.CMDUtils,Microsoft.VisualStudio.Component.SQL.SSDT,Microsoft.VisualStudio.Component.SQL.DataSources,Microsoft.VisualStudio.Component.Web""";[io.file]::ReadAllText("""C:\ProgramData\Microsoft\VisualStudio\Packages\Microsoft.VisualStudio.Debugger.JustInTime,version=15.0.26424.2\RegisterJustInTimeDebugger.ps1""") | Invoke-Expression; if (!$?) { exit 1603 } elseif ($LastExitCode) { exit $LastExitCode }"
Return code: 1
Return code details: Incorrect function.
在日志中：
[10c8:002a][2017-06-22T10:32:43] c:\windows\syswow64\\windowspowershell\v1.0\powershell.exe -ExecutionPolicy Bypass -InputFormat None -NoLogo -NonInteractive -NoProfile -Command "$ErrorActionPreference="""Stop""";$VerbosePreference="""Continue""";$Action="""Modify""";$AppId="""9180617e""";$Packages="""Microsoft.VisualStudio.Component.CoreEditor,Microsoft.VisualStudio.Component.NuGet,Microsoft.Net.Component.4.6.1.SDK,Microsoft.VisualStudio.Component.TypeScript.2.2,Microsoft.VisualStudio.Component.JavaScript.TypeScript,Component.WebSocket,Microsoft.VisualStudio.Component.JavaScript.Diagnostics,Microsoft.VisualStudio.Component.Roslyn.Compiler,Microsoft.VisualStudio.Component.Static.Analysis.Tools,Microsoft.VisualStudio.Component.Roslyn.LanguageServices,Microsoft.VisualStudio.Component.PortableLibrary,Microsoft.VisualStudio.Component.SQL.CLR,Microsoft.VisualStudio.Component.VisualStudioData,Microsoft.VisualStudio.Component.AppInsights.Tools,Microsoft.Component.ClickOnce,Microsoft.Net.Component.4.5.TargetingPack,Microsoft.VisualStudio.Component.Debugger.JustInTime,Microsoft.Component.MSBuild,Microsoft.Net.Component.4.6.1.TargetingPack,Microsoft.Net.ComponentGroup.DevelopmentPrerequisites,Microsoft.VisualStudio.Component.TextTemplating,Microsoft.VisualStudio.Component.ManagedDesktop.Core,Microsoft.Net.Component.4.TargetingPack,Microsoft.Net.Component.4.5.2.TargetingPack,Microsoft.VisualStudio.Component.IISExpress,Microsoft.VisualStudio.Component.WebDeploy,Microsoft.VisualStudio.Component.SQL.NCLI,Microsoft.VisualStudio.Component.SQL.LocalDB.Runtime,Microsoft.VisualStudio.Component.SQL.ADAL,Microsoft.VisualStudio.Component.Common.Azure.Tools,Microsoft.VisualStudio.Component.SQL.CMDUtils,Microsoft.VisualStudio.Component.SQL.SSDT,Microsoft.VisualStudio.Component.SQL.DataSources,Microsoft.VisualStudio.Component.Web""";[io.file]::ReadAllText("""C:\ProgramData\Microsoft\VisualStudio\Packages\Microsoft.VisualStudio.Debugger.JustInTime,version=15.0.26424.2\RegisterJustInTimeDebugger.ps1""") | Invoke-Expression; if (!$?) { exit 1603 } elseif ($LastExitCode) { exit $LastExitCode }"
[10c8:002a][2017-06-22T10:32:43] Error: Invoke-Expression : The term 'Invoke-Expression' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try
again.
At line:1 char:1812
+ ... bugger.ps1") | Invoke-Expression; if (!$?) { exit 1603 } elseif ($LastExitCode) ...
+ ~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (Invoke-Expression:String) [], ParentContainsErrorRecordException
+ FullyQualifiedErrorId : CommandNotFoundException
Invoke-Expression似乎无法识别......怎么可能？