Could not connect to the feed specified at ‘https://nuget.org/api/v2 : NuGet Package Manager Error

NuGet Package Manager Error : Could not connect to the feed specified at ‘https://nuget.org/api/v2

Today I encountered an error while I was trying to add a reference for newtonSoft.JSON from the NuGet Package Manager of Visual Studio 2010. Initially, I struggled and attempted various ways to resolve this and finally succeeded in resolving this. Please use this approach to resolve such NuGet errors.

I encountered an error as given below:
Could not connect to the feed specified at "https://nuget.org/api/v2/"'. Please verify that the package source (located in the Package Manager Settings) is valid and ensure your network connectivity.

There are a few steps recommended to resolve an error as shown below:

Could not connect to the feed specified at ‘https://nuget.org/api/v2/’. Please verify that the package source (located in the Package Manager Settings) is valid and ensure your network connectivity.

In order to resolve an error I made certain changes as shown below;

Step1 . Open file devnev.exe.config placed at C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE

Step2. Take a backup of this file.

Step3 . Open this file and find system <System.Net> </System.Net> ,which you may see at bottom of this file.

Step4 . Add the following segment into <System.net> as depicted below:

  1: <system.net>
  2:     <settings>
  3:       <servicePointManager expect100Continue="false" />
  4:       <ipv6 enabled="true"/>
  5:     </settings>
  6:     <defaultProxy useDefaultCredentials="true" enabled="true">
  7:       <proxy usesystemdefault="True"/>
  8:     </defaultProxy>
  9: </system.net>

Step5. Save and Close this file.

Step6: Reopen Visual Studio 2010.
Step7: For finding the package, first we need to open the Package Manager Console. We can open it as in the following:

• From the Tools menu.
  
• Select "Library Package Manager".
  
• Then select "Manage NuGet Packages for Solution".
   
• Open the NuGet Package Manager and type your desire file name, for examle I specified NewtonSoft.Json.
  

As soon as you have succeeded in downloading, a welcome message page is shown as in the following:

Hope it will help to resolve your issue.

Thanks

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