VS2017 publish: project.assets.json doesn't have a target for .NETCoreApp,Version=v1.1

[rainersigwald]

From @kosa-gyula-77 on June 8, 2017 14:27

Publishing the xunitCore1.0 project in the solution attached from Visual Studio 2017 fails with the following error:

Assets file 'C:\Users\xxx\Documents\Visual Studio 2017\Projects\xunitCore1.0\xunitCore1.0\obj\project.assets.json' doesn't have a target for '.NETCoreApp,Version=v1.1'. Ensure you have restored this project for TargetFramework='netcoreapp1.1' and RuntimeIdentifier=''.

Could you please help in identifying why I'm getting this error? xunitCore1.0 targets netcoreapp1.0.

xunitCore1.0.zip

Thanks.

Copied from original issue: dotnet/msbuild#2196

[alexvy86]

@rainersigwald did you figure this out? I'm seeing the same error trying to build a simple console app that targets net451 and netcoreapp1.1

[bsivanov]

@alexvy86 Not sure this would help, but I had the same issue when trying to build net40 project after building netstandard2.0 project, and both projects files are in the same folder.

What resolves the issue for me is manually deleting the \obj\project.assets.json file, which tends to break the build for the net40 project, if present, with the following error:
Your project is not referencing the ".NETFramework,Version=v4.0,Profile=Client" framework. Add a reference to ".NETFramework,Version=v4.0,Profile=Client" in the "frameworks" section of your project.json, and then re-run NuGet restore.

[alexvy86]

Thanks @bsivanov. I did try some variations of that but couldn't get it to work. To be sure I understood correctly: you have 2 separate project files, each one targeting a different framework, correct? For completeness sake in the discussion, in my case there's just one project which multi-targets net451 and netcoreapp1.1.

[bsivanov]

@alexvy86 yes, you get me right, but apparently your problem is different. You can maybe try to split the multi-targeting project to two projects, just to check whether the issue is related to some problematic leftover in the project.assets.json. Or maybe try to change the order in <TargetFrameworks>, if it matters at all?

[alexvy86]

I'm trying that as well (separate the projects) and ran into different errors that don't seem related. If I figure this out I'll post an update here.

[vullnetyy]

I have a .NET Standard 2.0 project and a .NET Framework 4.6.1 project in the same solution. When I try to build the 4.6.1 project, VS2017 shows the following error: Assets file 'C:\mySolution\dotnetFrameworkProject\obj\project.assets.json' doesn't have a target for '.NETFramework,Version=v4.6.1'. Ensure that restore has run and that you have included 'net461' in the TargetFrameworks for your project.

in

C:\Program Files\dotnet\sdk\2.0.0\Sdks\Microsoft.NET.Sdk\build\Microsoft.PackageDependencyResolution.targets 165

I tried deleting the project.assets.json file but the regenerated file didn't do me any good. I searched the project.assets.json file for the string TargetFrameworks (case insensitive) and only found a key called originalTargetFramework.

Any ideas?

[patroza]

Adding <RuntimeIdentifier>win7-x64</RuntimeIdentifier> to the csproj, beneath the <TargetFramework>net462</TargetFramework> seems to work.

(hm this seems to be a fix for another flavour of the same problem :))

[codegenic-works]

I encountered a similar error after updating my solution with multiple 1.1 projects to 2.0. I just deleted the bin and obj folders in each project and rebuilt. I no longer get the error.

[RoCore]

@altiss Thanks, this work for me too

[vullnetyy]

Deleting the obj and bin folders did not work for me. However I did manage to fix my issues using
dotnet restore mysolution.sln after getting the latest versions of Visual Studio 2017 and .NET Core 2

[kosa-gyula-77]

The issue cannot be reproduced after updating Visual Studio Professional 2017 to Version 15.3.2.

@rainersigwald, this issue can be closed.

Thanks.

[latchkostov]

@kosa-gyula-77 I disagree, I just ran into this issue on 15.3.2, when trying to upgrade an application from netcoreapp1.1 to netcoreapp2.0. I had to delete the contents of the obj folder.

[vullnetyy]

What we've discovered now is that when we have .NET Core SDK 2.0 installed, we cannot build .NET Framework 4.6.1 projects with the new .csproj format. We keep getting the ...obj\project.assets.json... error

[patroza]

@vullnetyy does this help? #1321 (comment)