error NU1001: The dependency Microsoft.NETCore.App >= 1.0.1 could not be resolved

[zipswich]

Steps to reproduce

Install ASP.NET Core + Angular 2 template for Visual Studio, create a new project with that template, then build the project.

Expected behavior

Finish building successfully.

Actual behavior

Failure

Environment data

dotnet --info output:
project.json(3,30): error NU1001: The dependency Microsoft.NETCore.App >= 1.0.1 could not be resolved.
project.json(10,41): error NU1001: The dependency Microsoft.NETCore.App >= 1.0.1 could not be resolved.
project.json(3,30): error NU1001: The dependency Microsoft.NETCore.App >= 1.0.0 could not be resolved.
project.json(10,41): error NU1001: The dependency Microsoft.NETCore.App >= 1.0.0 could not be resolved.
project.json(7,53): error NU1001: The dependency Microsoft.AspNetCore.AngularServices >= 1.0.0-* could not be resolved.
project.json(9,39): error NU1001: The dependency Microsoft.AspNetCore.Mvc >= 1.0.1 could not be resolved.
project.json(15,50): error NU1001: The dependency Microsoft.AspNetCore.Server.Kestrel >= 1.0.1 could not be resolved.
project.json(19,61): error NU1001: The dependency Microsoft.Extensions.Configuration.CommandLine >= 1.0.0 could not be resolved.

The following is the project.json:

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.1",
      "type": "platform"
    },
    "Microsoft.AspNetCore.AngularServices": "1.0.0-*",
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.1",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Configuration.CommandLine": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0"
  },

  "tools": {
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final",
    "Microsoft.DotNet.Watcher.Tools": "1.0.0-preview2-final"
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dotnet5.6",
        "portable-net45+win8"
      ]
    }
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true
    }
  },

  "publishOptions": {
    "include": [
      "appsettings.json",
      "ClientApp/dist",
      "node_modules",
      "Views",
      "web.config",
      "wwwroot"
    ]
  },

  "scripts": {
    "prepublish": [
      "npm install",
      "node node_modules/webpack/bin/webpack.js --config webpack.config.vendor.js --env.prod",
      "node node_modules/webpack/bin/webpack.js --env.prod"
    ],
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  },

  "tooling": {
    "defaultNamespace": "Color_Vision_Test_Angular"
  }
}

[litoshko]

I ran into the same issue.
I managed to successfully restore packages and build the project by changing one line in project.json:
line 7: "Microsoft.AspNetCore.AngularServices": "1.0.0-",
to the following:
"Microsoft.AspNetCore.AngularServices": "1.0.0-beta-",

[zipswich]

Thank you for the tip. I tried that, but it did work.
Then I did a slew of other things (update packages, install Microsoft.NETCore.App package, then uninstall it, etc.), and now it works. I am not sure what fixed it. My guess is updating some NuGet packages.

[weitzhandler]

@litoshko
That solved the problem.
Thanks man!

[blackdwarf]

Since it seems that this issue was due to the incorrect package name and that the issue has been resolved, I will close it. Please reopen if you run into this again.

[adrobson]

Don't forget to try Restore Packages (right mouse click on project) !!. I had seemingly endless problems as the template kept failing upon first load. There were always two packages that failed - Microsoft.Extensions.Configuration.CommandLine and Microsoft.AspNetCore.AngularServices. After a dozen uninstall and install of the dotnetcore framework and tools and a few reinstalls of Visual Studio the situation had not changed. I finally tried right mouse clicking on the project and selecting Restore Packages. It then worked. I'm not sure if anything else I did along the way actually changed anything.

[as-ghub]

Clear the contents of project.lock.json file and save.It will restore the packages once again , this should be a good workaround. It worked for me!

[gauravjoshi18]

I solve the same problem in my project by

Tools -> NuGet Package Manager -> Package Manager Console
Select required project from 'Default Project' list
Run the command "dotnet restore" on Package Manager Console
Rebuild the your project again this will solve your problem