Installing NuGet packages manually? RRS feed

  • Question

  • I'm trying to install ValueTuple nuget package manually without internet connection:


    But getting an error:

    Install-Package System.ValueTuple -Source N:\
    Attempting to gather dependency information for package 'System.ValueTuple.4.4.0' with respect to project 'Advent7', targeting '.NETFramework,Version=v4.6.1'
    Install-Package : Exception 'System.AggregateException' thrown when trying to add source 'https://api.nuget.org/v3/index.json'. Please verify all your online package sources are available.
      One or more errors occurred.
      Unable to load the service index for source https://api.nuget.org/v3/index.json.
      An error occurred while sending the request.
      Unable to connect to the remote server
      An attempt was made to access a socket in a way forbidden by its access permissions
    At line:1 char:16
    + Install-Package <<<<  System.ValueTuple -Source N:\
        + CategoryInfo          : NotSpecified: (:) [Install-Package], Exception
        + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PackageManagement.PowerShellCmdlets.InstallPackageCommand

    Apparently it still wants to connect. How can I avoid that? My project targets .NET Framework 4.6.1 so it should be good on dependencies.

    Friday, December 8, 2017 7:15 PM


  • Hi,

    Please make sure that you have created a local nuget repository for offline development.

    • Firstly, you’ll need to create a local folder to house all your local NuGet packages.
    • The next step is to download the NuGet packages you wish to be able to use offline into this folder.(need network connection)
    • Once you have successfully downloaded the .nupkg files you require into your local repository folder, head into Visual Studio and open the NuGet Settings dialog via Tools > NuGet Package Manager > Package Manager Settings. Click the Package Sources tab within the settings dialog, followed by the ‘plus’ icon in the top left to add a new package source.
    • Now that you have added the local package source, you will be able to use your offline local repository from within Visual Studio in the usual way.

    refer: Creating a local NuGet repository for offline development

    (Note: This response contains a reference to a third-party World Wide Web site. Microsoft is providing this information as a convenience to you. 
    Microsoft does not control these sites and has not tested any software or information found on these sites; Therefore, Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there.)

    Best regards,


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    • Marked as answer by N-kei Monday, December 11, 2017 2:49 PM
    Monday, December 11, 2017 6:53 AM