Default ASP.NET core project failing to publish

Question

I am making my first .net core app. I just created the default asp.net core web app inside visual studio template and then tried dotnet publish but I get this error:

PM> dotnet publish
dotnet : 'D:\Projects\coreTest\CoreTest' does not contain a project.json file
At line:1 char:1
+ dotnet publish
+ ~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: ('D:\Projects\co...oject.json file:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError

I haven't changed anything. The default template includes a project.json file with dependencies listed. Why doesn't it want to publish?

Can you verify that the project.json file exists and is valid? — jegtugado
– jegtugado, Commented Jul 28, 2016 at 0:07
It exists. Visual studio created it and filled in dependencies when I created the default web app project. The path is D:\Projects\coreTest\CoreTest\src\CoreTest so I think its looking in wrong path when im running this in package manager console. — Guerrilla
– Guerrilla, Commented Jul 28, 2016 at 0:09
Does dotnet restore and dotnet build work on that exact folder? — Gerardo Grignoli
– Gerardo Grignoli, Commented Jul 28, 2016 at 0:35
@GerardoGrignoli dotnet restore works fine on the projects.json file in nested folder but both dotnet restore and dotnet build complain there is no projects.json file as it is looking one level up. I am able to build project from menu and also preview it fine by hitting play. It's just these commands in package manager console seem to be looking in wrong place. — Guerrilla
– Guerrilla, Commented Jul 28, 2016 at 0:41

Guerrilla · Accepted Answer · 2016-07-28 01:01:29Z

1

This seems to be a bug with package manager. I managed to publish the project by right clicking the project and selecting publish.

answered Jul 28, 2016 at 1:01

Guerrilla

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Tomáš Hübelbauer · Accepted Answer · 2017-01-15 15:25:04Z

1

For anyone running into this and ending up on this answer, it is possible that you have a mismatch between dotnet --version on different machines where you are trying to compile.

There is a breaking change in transitioning from project.json back to MS Build.

I was trying to compile an app built for the MS Build version on an environment with the project.json version and ran into this. As a noob when it comes to new .NET stuff, and having not followed the changes too closely, I didn't realize this was the culprit for some time.

answered Jan 15, 2017 at 15:25

Tomáš Hübelbauer

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