'Portable.BouncyCastle' already has a depe

问题:

This error occurs on the Bamboo build server during a command that restores my solution's NuGet packages. I can bypass this error by disabling the package restore task; however, this is only a temporary fix. Is there any way I can check if the dependency exists while running the task? This error occurs before MSBUILD is running. I am using .NET 4.5

回答1:

The already has a dependency defined for error when installing a NuGet package is due to a bug in older versions of NuGet.

You should look at updating NuGet on the build server or run your own build step that uses a version of NuGet that you download or deploy separately.

回答2:

This issue is fixed if you use nuget version: 3.4.4+

https://dist.nuget.org/index.html

I would recommend using latest version