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We have downloaded a project from TFS and after restoring Nuget packages we are getting below error:

Error   5   The "ValidatePackageReferences" task could not be loaded from the assembly projectPath\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.Tasks.dll. Could not load file or assembly 'file:///projectPath\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.Tasks.dll' or one of its dependencies. The system cannot find the file specified. Confirm that the <UsingTask> declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask.  projectName

We have not used Task anywhere. It seems it is being used internally. Any pointer how to get rid of this error? Mostly it looks like its because of wrong version of NuGet package. But not sure whats root cause.

We are using VS 2013 Update 5 version.

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Ahmed Masud
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user2243747
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  • Possible duplicate of [Installed project-specific nuget packages not being recognized](https://stackoverflow.com/questions/32254228/installed-project-specific-nuget-packages-not-being-recognized) – Ahmed Masud Oct 30 '17 at 23:36
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    This is not a duplicate, it's a well known error for a specific package. – BrainSlugs83 Jan 15 '18 at 23:48

1 Answers1

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First search "Microsoft.Bcl.Build.Tasks.dll." nuget on google. Then a link will be opened with named "https://www.nuget.org/packages/Microsoft.Bcl.Build/". Then copy the package name shown on the site like this 

Install-Package Microsoft.Bcl.Build -Version 1.0.21

Then Open the Visual studio , Goto Tools>Nuget Package Manager>Package manager console. Now paste the copied install package,Install it. Then restart the VS.Issue will be solved.

aloisdg
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Varinder Singh Baidwan
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