VS2015 - The 'NuGetPackage' package did not load correctly

Question

Just opened up VS 2015 Enterprise RTM, opened up an existing working project, getting the following error:

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Microsoft Visual Studio

Answer 1

It seems that nuget in VS2015 is set up to show only microsoft packages. To be able to search all packages in nuget.org go to Tools > Options > NuGet Package Manager > Package Sources, click add, put nuget.org as Name and https://www.nuget.org/api/v2/ as Source, then click OK. Now in Nuget Package Manager you can select nuget.org (or All) as Package source and you will be able to search for all packages (not only the ones coming from microsoft).