When adding package using NuGet then gives error

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when Installing Following Package

+ Install-Package Google.Apis.Gmail.v1

It gives Error

Install-Package : 'Google.Apis.Gmail.v1' already has a dependency defined for 'NETStandard.Library'.
At line:1 char:1
+ Install-Package Google.Apis.Gmail.v1
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Install-Package], InvalidOperationException
    + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand
 
PM>

What I have tried:

Type 'get-help NuGet' to see all available NuGet commands.

PM> Install-Package Google.Apis.Gmail.v1

Posted 12-Sep-17 7:47am

paul_vin

Updated 12-Sep-17 20:04pm

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Comments

Richard Deeming 12-Sep-17 15:17pm

It sounds like either you're using an old version of Visual Studio which doesn't support .NET Standard, or there's a problem with that specific package.

Eg: 'AutoMapper' already has a dependency defined for 'NETStandard.Library'[^] - different package, same problem.

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koklimabc · Answer 1 · 2017-09-12T20:04:00

Solution 1

Update Your all install package and dependencies

+ upgrade-package

+ Install-Package Google.Apis.Gmail.v1

Posted 12-Sep-17 20:04pm

koklimabc