Machinelearning: Installing package Microsoft.ML on target framework .NET Framework 4.6.2 fails.

[iSatishYadav]

System information

• OS version/distro: Windows 10
• .NET Version (eg., dotnet --info): .NET 4.6.2

Issue

• What did you do?
  Tried to install Nuget Package Microsoft.ML on a .NET 4.6.2 project in Visual Studio 2013 (Version 12.0.40629.00 Update 5)

• What happened?
  Nuget Package installation failed with error.

• What did you expect?
  Nuget Package should have been installed successfully as netstandard 2.0 supports .NET Framework 4.6.2.

Source code / logs

Installing 'Microsoft.ML 0.4.0'. Successfully installed 'Microsoft.ML 0.4.0'. Adding 'Microsoft.ML 0.4.0' to XXX. Uninstalling 'Microsoft.ML 0.4.0'. Successfully uninstalled 'Microsoft.ML 0.4.0'. Install failed. Rolling back... Could not install package 'Microsoft.ML 0.4.0'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.6.2', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.

[GalOshri]

I am able to repro the issue with Visual Studio 2013.

This seems similar to #290. @eerhardt, any ideas?

[JRAlexander]

This is still happening with 0.5.0

[eerhardt]

I don't believe Visual Studio 2013 supports netstandard2.0, but I have no hard information to back that up.

@nguerrera @dsplaisted @joperezr @AlexGhiondea - is it expected that I can use a netstandard2.0 library in VS 2013? My assumption was that I needed to either:

1. Use VS 2015 with
   
   
   
   1. The latest NuGet VSIX for VS 2015 (v3.6.0 as of this writing) from https://www.nuget.org/downloads
   
   
   2. The .NET Standard Build Support extension from https://aka.ms/netstandard-build-support-netfx
   
   
2. Use VS 2017

[JRAlexander]

I'm using VS 2017. A .NET Framework 4.62 project in a solution will not allow me to reference a .NET standard 2.0 ML.NET project in the same solution.

[eerhardt]

I'm using VS 2017

Then you aren't hitting the same problem described in this issue. Can you open a new issue with your repro steps and environment information?

[JRAlexander]

Yes, I can. Thanks.

[joperezr]

I don't believe Visual Studio 2013 supports netstandard2.0, but I have no hard information to back that up.

That's right. The NuGet libraries that shipped with 2013 which contain the mappings between different frameworks most likely don't know about netstandard2.0 yet nor their compatibility with .NET 4.6.2. Upgrading to a newer version of VS should fix this issue.

@JRAlexander if you are using VS 2017 I would totally expect this problem not to happen, so if you open an issue please tag me so that we can investigate what is gonig on.

[eerhardt]

Closing as "Won't Fix", since VS 2013 doesn't support netstandard2.0 libraries.

[kjsbedi]

@JRAlexander I am using using VS 2017 and when I am trying to install ML.NET 0.50 I am getting following error:

everity Code Description Project File Line Suppression State
Error Could not install package 'Microsoft.ML 0.5.0'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.5.2', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.

Please help

[eerhardt]

@kjsbedi - Microsoft.ML is a netstandard2.0 package, which is only compatible on .NET Framework v4.6.1 or later. You are using v4.5.2. You will need to re-target your project to .NET Framework v4.6.1 or later in order to use it. You can change the target framework version in the project property pages in VS.

[yusufmsalh]

I have tried installing MlL.net on VS 2015 .Net Framework v4.6.1 still facing the same issue
Severity Code Description Project File Line Suppression State
Error Could not install package 'Microsoft.ML 0.11.0'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.6.1', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author. 0

[eerhardt]

@yusufmsalh - did you do the following?

1. Use VS 2015 with
   
   
   
   1. The latest NuGet VSIX for VS 2015 (v3.6.0 as of this writing) from https://www.nuget.org/downloads
   
   
   2. The .NET Standard Build Support extension from https://aka.ms/netstandard-build-support-netfx
   
   

[yusufmsalh]

I did the two steps above as you mentioned them ,now I'm facing another error and if You may help me:
Severity Code Description Project File Line Suppression State
Error Microsoft.ML currently supports 'x64' and 'x86' processor architectures. Please ensure your application is targeting 'x64' or 'x86'.

[yusufmsalh]

I tried to resolve it using this link ,
now I have a lot of errors saying duplicate references
like this
Severity Code Description Project File Line Suppression State
Error CS1703 Multiple assemblies with equivalent identity have been imported: 'C:\Program Files (x86)\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\net461\ref\System.Collections.Concurrent.dll' and 'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETFramework\v4.6.1\Facades\System.Collections.Concurrent.dll'. Remove one of the duplicate references.

[yusufmsalh]

I have resolved by switching back to Dot Net Framework V4.6 , I wonder if you may find another solution for the duplicate reference issue @eerhardt

[eerhardt]

Microsoft.ML currently supports 'x64' and 'x86' processor architectures. Please ensure your application is targeting 'x64' or 'x86'.

As the error indicates, you can't use Any CPU with Microsoft.ML. Instead you need to change your project's platform to either x64 or x86. See https://docs.microsoft.com/en-us/visualstudio/ide/how-to-configure-projects-to-target-platforms for instructions on how to change it.

[yusufmsalh]

Yes Eric ,I have solved this issue ,
Yet you may follow the thread,
i am still facing an issue for using ML.Net on Visual Studio 2015, Dot Net
Framework 4.6.1
On Mar 11, 2019 5:59 PM, "Eric Erhardt" [e-mail] wrote:

Microsoft.ML currently supports 'x64' and 'x86' processor architectures.
Please ensure your application is targeting 'x64' or 'x86'.

As the error indicates, you can't use Any CPU with Microsoft.ML. Instead
you need to change your project's platform to either x64 or x86. See
https://docs.microsoft.com/en-us/visualstudio/ide/how-to-
configure-projects-to-target-platforms for instructions on how to change
it.

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[HardyRas]

Microsoft.ML currently supports 'x64' and 'x86' processor architectures. Please ensure your application is targeting 'x64' or 'x86'.

As the error indicates, you can't use Any CPU with Microsoft.ML. Instead you need to change your project's platform to either x64 or x86. See https://docs.microsoft.com/en-us/visualstudio/ide/how-to-configure-projects-to-target-platforms for instructions on how to change it.

A save!