NuGet add reference error while installing packages

Question

I am not able to install any package by Nuget. For example when I want install entity framework I receive following error:

install-package EntityFramework
Su         


        

Answer 1

In my case, deleting all occurrences of 'EntityFramework...' files in the Bin folder (open the folder in Windows Explorer) worked form me. I didn't have the packages folder in my project. The 'EntityFramework...' files were added by different action.

NOTE: You may need to rebuild project to remove error(s).