Unable to install package from package manager console

Sachin Singh

PM> Install-Package Microsoft.AspNet.WebApi.Cors
The source at nuget.org [https://www.nuget.org/api/v2/] is unreachable. Falling back to NuGet Local Cache at C:\Users\Aashima\AppData\Local\NuGet\Cache
Install-Package : Unable to find package 'Microsoft.AspNet.WebApi.Cors'.
At line:1 char:16
+ Install-Package <<<< Microsoft.AspNet.WebApi.Cors
+ CategoryInfo : NotSpecified: (:) [Install-Package], InvalidOperationException

+ FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand

I have below source settings

I have also cleared the Package cache ---din't work for me.

Install-Package Microsoft.AspNet.WebApi.Cors -Source nuget.org ---din't work for me.

7 Replies

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geetha velusamy4y ago
Problem Identification: Unable to install the Microsoft.Cors
Solution:
Tools-->NugetPackageManagerConsole-->Update-Package Microsoft.AspNet.WebApi.Cors
Install-Package Microsoft.AspNet.WebApi.Cors
Alternate Solution:
Tools-->Manage Package for Solution -->Browse -->Microsoft.AspNet.WebApi.Cors
Sachin Singh6y ago
The Ultimate, The End Game solution worked for me ,
- simply uninstall nuget package manager for Vs 2013
- install nuget package manager for VS 2013
- restart VS
Santhakumar Munuswamy6y ago
Hi,

you can try

https://marketplace.visualstudio.com/items?itemName=NuGetTeam.NuGetPackageManagerforVisualStudio2013
Sachin Singh6y ago
@Farhan Cors was just an example , i am unable to install any package from nuget as if nuget support is now not available for VS 2013.

If anyone here using VS 2013 and still able to add packages from nuget then please let me know.
Santhakumar Munuswamy6y ago
Hi Aashima,

you can check out the link for your reference. I hope you will get some idea or solutions for this link

https://docs.microsoft.com/en-us/nuget/consume-packages/install-use-packages-powershell

Install-Package Microsoft.AspNet.WebApi.Cors

https://stackoverflow.com/questions/37453172/install-package-unable-to-find-package-microsoft-aspnet-webapi-cors

https://stackoverflow.com/questions/35496757/not-able-to-install-microsoft-aspnet-webapi-cors-from-nuget/35639180

https://stackoverflow.com/questions/24025409/source-unreachable-when-using-the-nuget-package-manager-console

Once you add the package then restart your PC or Visual Studio is required then you can try it
Jignesh Kumar6y ago
Hi Ahima,

Please use this link which will help you,
https://stackoverflow.com/questions/38242431/unable-to-install-nuget-package-falling-back-to-nuget-local-cache
https://stackoverflow.com/questions/37453172/install-package-unable-to-find-package-microsoft-aspnet-webapi-cors
Farhan Ahmed6y ago
https://stackoverflow.com/questions/35496757/not-able-to-install-microsoft-aspnet-webapi-cors-from-nuget