相关疑难解决方法(0)

我无法通过Nuget安装任何软件包.例如,当我想要安装实体框架时,我收到以下错误:

install-package EntityFramework
Successfully installed 'EntityFramework 4.2.0.0'.
Successfully uninstalled 'EntityFramework 4.2.0.0'.
Install failed. Rolling back...
Install-Package : Failed to add reference to 'EntityFramework'.
At line:1 char:16
+ install-package <<<<  EntityFramework
   + CategoryInfo          : NotSpecified: (:) [Install-Package], InvalidOperationException
   +FullyQualifiedErrorId:NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand

从console或gui安装每个软件包时收到同样的错误.重新安装nuget,禁用其他扩展和运行VS作为管理员没有帮助我.

问候