The specified framework 'Microsoft.NETCore.App', version '2.0' was not found

[redowl3]

Not sure if this is a cli issue or VS so happy to move to another area if not correct

Steps to reproduce

Update to Visual Studio Professional Preview (v 15.5.0 Preview 2)

Try to add data migration (using IDesignTimeDbContextFactory)

dotnet ef migrations add [MigrationName]

Expected behavior

Migration created

Actual behavior

Error message

The specified framework version '2.0' could not be parsed
The specified framework 'Microsoft.NETCore.App', version '2.0' was not found.

• Check application dependencies and target a framework version installed at:
  \
• Alternatively, install the framework version '2.0'.

Environment data

Product Information:
Version: 2.1.1-preview-007094
Commit SHA-1 hash: f657648

Runtime Environment:
OS Name: Windows
OS Version: 10.0.15063
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\2.1.1-preview-007094\

Microsoft .NET Core Shared Framework Host

Version : 2.0.0
Build : e8b8861ac7faf042c87a5c2f9f2d04c98b69f28d

[livarcocc]

Can you share your project or a repro of this issue?

[redowl3]

Hi,

Thanks for getting back to me.

The project is pretty big so not practical to share, but since updating to 15.5.0 Preview 2.0, as well as not being able to create migrations due to what looks like core versioning issues, I can no longer publish anything to Azure as the build fails although it builds fine in VS?

Whatever was changed with 15.5.0 Preview 2.0 looks to be creating a few issues.

As the issue appears to be with a project built with the previous version of the Preview, then updating to 15.5.0 Preview 2.0 I'm now unable to repro.

[livarcocc]

You can add a global.json pinning your SDK version to version 2.0.2 (the last release we did with VS 15.4) or 2.0.0.

Just add the global.json file to the root of your repo with contents like this:

{
  "sdk": {
    "version": "2.0.2"
  }
}

This should unblock you. But notice that your SDK will be pinned to whatever version you put there. Let us know if this unblocks you.

It would also be super helpful if you could at least find a minimal repro for this problem. Is this happening on multiple machines?
Can you tell us what are the folders you have under C:\Program Files\dotnet\shared\microsoft.netcore.app? This will tell us which runtimes you have in the box.

[redowl3]

Thanks for the suggestion, I'll try that. I've only tried this on a single machine.

Folder structure below.

[livarcocc]

Could you share the contents of runtimeconfig.json file for your tool? And are you packaging it in your tool nupkg?

[netbidev]

Hello everyone. I have this problem too.

[livarcocc]

@netbidev any chance you have a small repro for us?

[netbidev]

@livarcocc here
TestDB.DBModel.zip

The command here
dotnet ef dbcontext scaffold "Server=.;Database=TestDB;Trusted_Connection=True;" Microsoft.EntityFrameworkCore.SqlServer

[dls314]

@netbidev That project replicates the error for me as well

[dls314]

@livarcocc The workaround of adding a global.json file specifying 2.0.2 works for me.

Does anyone know if/how the --fx-version argument could be used instead? global.json is tacky.

[livarcocc]

the --fx-version argument is a host argument that can be used to indicate which runtime framework to use when running an application.

Like this: dotnet --fx-version 2.0.0 <app.dll>.

[dls314]

I guess that the dotnet ef command can't be used with host arguments? I've tried putting --fx-version in various places in a command like dotnet ef migrations list without success.

[jeremymeng]

Hit this issue in an xunit test project too. Repro:

1. dotnet new xunit
2. Upgrade to latest xunit 2.3.1, and add dotnet-xunit tool

  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0-preview-20170810-02" />
    <PackageReference Include="xunit" Version="2.3.1" />
    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
    <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />
  </ItemGroup>

3. dotnet build
4. dotnet xunit

Actual:

Detecting target frameworks in test2.csproj...
Building for framework netcoreapp2.0...
  test2 -> e:\temp\test2\bin\Debug\netcoreapp2.0\test2.dll
Running .NET Core 2.0 tests for framework netcoreapp2.0...
The specified framework version '2.0' could not be parsed
The specified framework 'Microsoft.NETCore.App', version '2.0' was not found.
  - Check application dependencies and target a framework version installed at:
      \
  - Alternatively, install the framework version '2.0'.

Notes:
dotnet test works.
dotnet xunit --fx-version 2.0.0 works too.

[Kurtbaby]

I am having the same issue after upgrading to v15.4.4. The only solution I've found so far to fix the CLI tools issue it to add the RuntimeFrameworkVersion inside the property group as such:

<PropertyGroup>
   <TargetFramework>netcoreapp2.0</TargetFramework>
   <RuntimeFrameworkVersion>2.0.3</RuntimeFrameworkVersion>
</PropertyGroup>

[livarcocc]

I can't repro this using SDK 2.1.1-preview-007139 on a Mac or 2.1.1-preview-007165 on Windows. For those that are reproing this, is it always reproing on Windows? If so, can you make sure that you don't have two different dotnet versions installed, one x86 and one x64? And that the one being used by the tool is not being the wrong one? I mean, make sure that the right dotnet installation is coming before the other one in the path environment variable.