The "GetReferenceNearestTargetFrameworkTask" task was not found in omnisharp 1.32.16 (latest)

Environment data

NET Core SDK (reflecting any global.json):
 Version:   3.0.100-preview3-010431
 Commit:    d72abce213

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.17763
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\3.0.100-preview3-010431\

Host (useful for support):
  Version: 3.0.0-preview3-27503-5
  Commit:  3844df9537

.NET Core SDKs installed:
  3.0.100-preview3-010431 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.2.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.2.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0-preview3-19153-02 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.2.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0-preview3-27503-5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.0.0-preview3-27504-2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

VS Code version:

Version: 1.33.1 (user setup) Commit: 51b0b28134d51361cf996d2f0a1c698247aeabd8 Date: 2019-04-11T08:27:14.102Z Electron: 3.1.6 Chrome: 66.0.3359.181 Node.js: 10.2.0 V8: 6.6.346.32 OS: Windows_NT x64 10.0.17763

C# Extension version:

1.18.0

Steps to reproduce

Load a solution contain 2 project, let call them A and B which B has A as dependency.

Expected behavior

Both project are loaded.

Actual behavior

A load corectly but B cannot be load with error :

    The "GetReferenceNearestTargetFrameworkTask" task was not found. Check the following: 1.) The name of the task in the project file is the same as the name of the task class. 2.) The task class is "public" and implements the Microsoft.Build.Framework.ITask interface. 3.) The task is correctly declared with <UsingTask> in the project file, or in the *.tasks files located in the "C:\Users\Komi-San-Supporter\.vscode\extensions\ms-vscode.csharp-1.18.0\.omnisharp\1.32.16\msbuild\Current\Bin" directory.

Additional information:

Log file (level debug): omni.log

Despite not installing Visual Studio, the log said:

    MSBuild environment:

Mode: VisualStudio RunningTests: False RunningInVisualStudio: False

In older version, it was Mode: Standalone

I downgrade omnisharp to version 1.32.12-beta.51 and everything work as expected

[rchande]

@Fubuchi Can you set “omnisharp.path”:'latest" in your VS Code settings? I believe this is fixed now.

[rchande]

It looks like MSBuild change the heuristics it uses to determine if it’s running in Visual Studio. Now, the omnisharp path for MSBuild matches one of the VS checks (https://github.com/Microsoft/msbuild/blob/master/src/Shared/BuildEnvironmentHelper.cs#L158) so MSBuild sets the VS mode, which results in weird behavior. I think we can work around this by changing the path omnisharp puts it under…