'Portable.BouncyCastle' already has a dependency defined for 'System.Collections'

Question

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; howeve

Answer 1

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

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

I would recommend using latest version

Answer 2

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.