無法安裝Visual Studio 2017 RC的exenstions和更新（15.0.26014.0）

Question

我最近安裝了Visual Studio 2017 RC（15.0.26014.0）並試圖安裝擴展。但是，使用工具 - >擴展和更新菜單安裝任何擴展程序失敗。以下是安裝日誌。

27-Dec-16 10:35:19 AM - Beginning to install extension to Microsoft Visual Studio Enterprise 2017 RC... 
27-Dec-16 10:35:19 AM - Install Error : System.IO.FileNotFoundException: Unable to find the specified file. 
at Microsoft.VisualStudio.ExtensionManager.ExtensionEngineImpl.GetCurrentSetupInstance() 
at Microsoft.VisualStudio.ExtensionManager.ExtensionEngineImpl.PerformSetupEngineInstall(InstallableExtensionImpl extension, Boolean installPerMachine, Boolean isPackComponent, IDictionary`2 extensionsInstalledSoFar, List`1 extensionsUninstalledSoFar, IInstalledExtensionList modifiedInstalledExtensionsList, IProgress`1 progress, InstallFlags installFlags, AsyncOperation asyncOp, IInstalledExtension& newExtension) 
Microsoft.VisualStudio.ExtensionManager.ExtensionEngineImpl.InstallInternal (InstallableExtensionImpl extension, InstallFlags installFlags, IDictionary`2 extensionsInstalledSoFar, List`1 extensionsUninstalledSoFar, 
IInstalledExtensionList modifiedInstalledExtensionsList, AsyncOperation asyncOp, IProgress`1 progress) 
at Microsoft.VisualStudio.ExtensionManager.ExtensionEngineImpl.BeginInstall(IInstallableExtension installableExtension, InstallFlags installFlags, AsyncOperation asyncOp) 
at Microsoft.VisualStudio.ExtensionManager.ExtensionEngineImpl.InstallWorker(IInstallableExtension extension, InstallFlags installFlags, AsyncOperation asyncOp) 

我檢查，發現相應VSIX文件是存在於臨時文件夾（C：\用戶\ XXXXX \應用程序數據\本地的\ Temp）

Answer 1

我目前具有同樣的問題。根據this post，修復安裝可能會有所幫助。