Fail: OmniSharp.MSBuild.ProjectManager, Attemped to update project that is not loaded #2507

bkmalkoc · 2018-09-10T18:43:45Z

Environment data

dotnet --info output:
.NET Core SDK (reflecting any global.json):
Version: 2.1.300
Commit: adab45bf0c

Runtime Environment:
OS Name: Windows
OS Version: 10.0.17134
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\2.1.300\

Host (useful for support):
Version: 2.1.0
Commit: caa7b7e2ba

.NET Core SDKs installed:
1.0.0 [C:\Program Files\dotnet\sdk]
2.1.300 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
Microsoft.AspNetCore.All 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 1.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 1.1.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download

VS Code version: 1.27.1
C# Extension version:

Steps to reproduce

OmniSharp is updated itself

Expected behavior

Project to be working

Actual behavior

OmniSharp Log:

OmniSharp server started.
    Path: C:\Users\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\OmniSharp.exe
    PID: 8796

[info]: OmniSharp.Stdio.Host
        Starting OmniSharp on Windows 6.2.9200.0 (x64)
[info]: OmniSharp.Services.DotNetCliService
        DotNetPath set to dotnet
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Located 1 MSBuild instance(s)
            1: StandAlone 15.0 - "C:\Users\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\msbuild\15.0\Bin"
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        MSBUILD_EXE_PATH environment variable set to 'C:\Users\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\msbuild\15.0\Bin\MSBuild.exe'
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Registered MSBuild instance: StandAlone 15.0 - "C:\Users\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\msbuild\15.0\Bin"
            CscToolExe = csc.exe
            CscToolPath = C:\Users\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\msbuild\15.0\Bin\Roslyn
            MSBuildExtensionsPath = C:\Users\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\msbuild
            MSBuildToolsPath = C:\Users\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\msbuild\15.0\Bin
[info]: OmniSharp.Cake.CakeProjectSystem
        Detecting Cake files in 'c:\SwayPay-Marketing\ota-app-hotelbeds-content'.
[info]: OmniSharp.Cake.CakeProjectSystem
        Could not find any Cake files
[info]: OmniSharp.Stdio.Host
        Project system 'OmniSharp.DotNet.DotNetProjectSystem' is disabled in the configuration.
[info]: OmniSharp.MSBuild.ProjectSystem
        Detecting projects in 'c:\SwayPay-Marketing\ota-app-hotelbeds-content\HotelContentFetcher.sln'.
[info]: OmniSharp.MSBuild.ProjectManager
        Queue project update for 'c:\SwayPay-Marketing\ota-app-hotelbeds-content\Fetcher\HotelContentFetcher.csproj'
[info]: OmniSharp.MSBuild.ProjectManager
        Queue project update for 'c:\SwayPay-Marketing\ota-app-hotelbeds-content\FetcherTests\FetcherTests.csproj'
[info]: OmniSharp.Script.ScriptProjectSystem
        Detecting CSX files in 'c:\SwayPay-Marketing\ota-app-hotelbeds-content'.
[info]: OmniSharp.Script.ScriptProjectSystem
        Could not find any CSX files
[info]: OmniSharp.Stdio.Host
        Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpWorkspaceOptionsProvider
[info]: OmniSharp.Stdio.Host
        Configuration finished.
[info]: OmniSharp.Stdio.Host
        Omnisharp server running using Stdio at location 'c:\SwayPay-Marketing\ota-app-hotelbeds-content' on host 16256.
[info]: OmniSharp.MSBuild.ProjectManager
        Loading project: c:\SwayPay-Marketing\ota-app-hotelbeds-content\Fetcher\HotelContentFetcher.csproj
[info]: OmniSharp.MSBuild.ProjectManager
        Successfully loaded project file 'c:\SwayPay-Marketing\ota-app-hotelbeds-content\Fetcher\HotelContentFetcher.csproj'.
[info]: OmniSharp.MSBuild.ProjectManager
        Adding project 'c:\SwayPay-Marketing\ota-app-hotelbeds-content\Fetcher\HotelContentFetcher.csproj'
[info]: OmniSharp.MSBuild.ProjectManager
        Loading project: c:\SwayPay-Marketing\ota-app-hotelbeds-content\FetcherTests\FetcherTests.csproj
[fail]: OmniSharp.MSBuild.ProjectLoader
        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\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\msbuild\15.0\Bin" directory.
[warn]: OmniSharp.MSBuild.ProjectManager
        Failed to load project file 'c:\SwayPay-Marketing\ota-app-hotelbeds-content\FetcherTests\FetcherTests.csproj'.
c:\SwayPay-Marketing\ota-app-hotelbeds-content\FetcherTests\FetcherTests.csproj
C:\Users\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\msbuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(1657,5): 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\Burak\.vscode\extensions\ms-vscode.csharp-1.16.0\.omnisharp\1.32.4\msbuild\15.0\Bin" directory.

[info]: OmniSharp.MSBuild.ProjectManager
        Update project: HotelContentFetcher
[fail]: OmniSharp.MSBuild.ProjectManager
        Attemped to update project that is not loaded: c:\SwayPay-Marketing\ota-app-hotelbeds-content\FetcherTests\FetcherTests.csproj

The text was updated successfully, but these errors were encountered:

rchande · 2018-09-10T19:22:14Z

@bkmalkoc Thanks for filing--can you share your solution or tell me more about your project/folder topology? Eg, what project to project references do you have, are all of those projects in the same solution, etc?

bkmalkoc · 2018-09-10T19:26:13Z

@rchande
The project topology is shown below. Basically under one solution, test project and the core code under console application.

rchande · 2018-09-10T19:30:20Z

Also @bkmalkoc what kinds of projects are these? .NET Core, .NET Framework?

bkmalkoc · 2018-09-10T19:31:58Z

@rchande it is .NET Core

djkiwe · 2018-09-10T21:47:17Z

Hello. I have this same problem just after OmniSharp updated itself. There has been an update from VS Code and the dotnet-sdk recently too, not sure if it's related. I'm using Fedora 28.

rchande · 2018-09-10T22:06:36Z

@bkmalkoc @djkiwe Could you try updating to the 2.1.400 release of the dotnet SDK and let me know if that helps?

djkiwe · 2018-09-10T22:11:09Z

I am using the latest sdk release.
Output of dotnet --version:

2.1.401

Output of dotnet --info:

.NET Core SDK (reflecting any global.json):
 Version:   2.1.401
 Commit:    91b1c13032

Runtime Environment:
 OS Name:     fedora
 OS Version:  28
 OS Platform: Linux
 RID:         fedora.28-x64
 Base Path:   /usr/lib64/dotnet/sdk/2.1.401/

Host (useful for support):
  Version: 2.1.3
  Commit:  N/A

.NET Core SDKs installed:
  2.1.401 [/usr/lib64/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.NETCore.App 2.1.3 [/usr/lib64/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

rchande · 2018-09-10T22:13:01Z

@djkiwe Please share your omnisharp log. Thanks!

djkiwe · 2018-09-10T22:18:08Z

Now that I double checked, my log shows different errors from @bkmalkoc 's. Although both finish with the same statement: OmniSharp.MSBuild.ProjectManager, Attemped to update project that is not loaded.
Should I open a different issue?
Thank you!

rchande · 2018-09-10T22:22:51Z

@djkiwe Yes, please.

bkmalkoc · 2018-09-10T22:53:23Z

@rchande @djkiwe I updated the .Net Core sdk to 2.1.401(latest) also updated the packages but no changes, still same error.

rchande · 2018-09-10T23:03:04Z

@bkmalkoc Is it possible for you to share just the csprojs? I can't reproduce this with the base output of "dotnet new"...

bkmalkoc · 2018-09-10T23:08:20Z

HotelContentFetcher.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.0</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="AWSSDK.S3" Version="3.3.23" />
    <PackageReference Include="MySql.Data.EntityFrameworkCore" Version="8.0.12" />
    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
  </ItemGroup>
</Project>

FetcherTests.csproj

<Project Sdk="Microsoft.NET.Sdk">

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

    <IsPackable>false</IsPackable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />
    <PackageReference Include="MSTest.TestAdapter" Version="1.3.2" />
    <PackageReference Include="MSTest.TestFramework" Version="1.3.2" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\Fetcher\HotelContentFetcher.csproj" />
  </ItemGroup>

</Project>

johnnyreilly · 2018-09-11T12:46:48Z

Affecting me and others as well... See

OmniSharp/omnisharp-roslyn#1094
#2509 and #2510 also

LuizPelegrini · 2018-09-11T15:01:32Z

This same error is also affecting me, I can no longer use the Unity Debugger

bkmalkoc · 2018-09-11T16:55:40Z

I have completely removed everything from my computer (vscode, sdk) then reinstalled and now working. weird and foolish solution but at least I get th work going. @rchande

rchande · 2018-09-11T18:14:18Z

@bkmalkoc Glad you got it working. Could you share your dotnet --info and omnisharp log from your working instance to help us understand how you fixed it?

pietro-Alterdata · 2018-09-11T18:42:19Z

I've set my ms-vscode.csharp package.json for the 1.32.3 version release of omnisharp and updated my extension folder with this version.
https://omnisharpdownload.blob.core.windows.net/ext/omnisharp-win-x64-1.32.3.zip

It worked for me.

bkmalkoc · 2018-09-11T20:43:36Z

@rchande I have no clue what has changed but after clean reinstallation here is my dotnet;
nothing is wrong in omnisharp tho, works with the same latest version

dotnet --info

.NET Core SDK (reflecting any global.json):
 Version:   2.1.401
 Commit:    91b1c13032

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.17134
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\2.1.401\

Host (useful for support):
  Version: 2.1.3
  Commit:  124038c13e

.NET Core SDKs installed:
  2.1.401 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

rchande · 2018-09-12T16:10:20Z

@bkmalkoc glad you got it working. For others still encountering issues:
We believe we have identified the cause of the "GetReferenceNearestTargetFrameworkTask" issue and we've created a beta of the C# extension that includes the fix. Please install the beta VSIX (https://github.com/OmniSharp/omnisharp-vscode/releases/download/v1.16.1-beta1/csharp-1.16.1-beta1.vsix) and let us know if that resolves the problem

farzadmf · 2018-09-16T14:52:47Z

I downloaded and installed the beta version, but I still have an error.

I'm not sure if I'm getting the same error as the other guys, but this is what I see

Microsoft.Build.Exceptions.InvalidProjectFileException: Could not load SDK Resolver. A manifest file exists, but the path to the SDK Resolver DLL file could not be found. Manifest file path 'C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin\SdkResolvers\Microsoft.Build.NuGetSdkResolver\Microsoft.Build.NuGetSdkResolver.xml'. SDK resolver path: C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\Common7\IDE\CommonExtensions\Microsoft\NuGet\Microsoft.Build.NuGetSdkResolver.dll  d:\temp\temp-dotnet\temp-hackerrank\hackerrank-scratchpad\array-left-rotation\array-left-rotation.csproj

And the output of my dotnet --info:

.NET Core SDK (reflecting any global.json):
 Version:   2.1.401
 Commit:    91b1c13032

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.17134
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\2.1.401\

Host (useful for support):
  Version: 2.1.3
  Commit:  124038c13e

.NET Core SDKs installed:
  2.1.105 [C:\Program Files\dotnet\sdk]
  2.1.200 [C:\Program Files\dotnet\sdk]
  2.1.202 [C:\Program Files\dotnet\sdk]
  2.1.300 [C:\Program Files\dotnet\sdk]
  2.1.302 [C:\Program Files\dotnet\sdk]
  2.1.400 [C:\Program Files\dotnet\sdk]
  2.1.401 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.0.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

CTJansson · 2018-10-02T15:19:58Z

I had this problem recently, I thought I had everything installed even mono, but I didn't have mono-complete installed just a few packages it seems, it solved my problem. People could try that and see if it solves thier problems.

FranklinWhale · 2018-10-15T07:01:07Z

@rchande I have getting the same error using both 1.16.2 and 1.17.0...

The project was generated using dotnet new console -o EfCoreTest

The VS Code output log as follows:

Starting OmniSharp server at 10/15/2018, 2:56:15 PM
    Target: c:\Users\Franklin\Documents\EfCoreTest

OmniSharp server started.
    Path: C:\Users\Franklin\.vscode\extensions\ms-vscode.csharp-1.17.0\.omnisharp\1.32.6\OmniSharp.exe
    PID: 5808

[info]: OmniSharp.Stdio.Host
        Starting OmniSharp on Windows 6.2.9200.0 (x64)
[info]: OmniSharp.Services.DotNetCliService
        DotNetPath set to dotnet
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Located 3 MSBuild instance(s)
            1: Visual Studio Build Tools 2017 15.8.28010.2041 - "C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin"
            2: Visual Studio Community 2017 15.8.28010.2041 - "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\MSBuild\15.0\Bin"
            3: StandAlone 15.0 - "C:\Users\Franklin\.vscode\extensions\ms-vscode.csharp-1.17.0\.omnisharp\1.32.6\msbuild\15.0\Bin"
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Registered MSBuild instance: Visual Studio Build Tools 2017 15.8.28010.2041 - "C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin"
[info]: OmniSharp.Cake.CakeProjectSystem
        Detecting Cake files in 'c:\Users\Franklin\Documents\EfCoreTest'.
[info]: OmniSharp.Cake.CakeProjectSystem
        Could not find any Cake files
[info]: OmniSharp.WorkspaceInitializer
        Project system 'OmniSharp.DotNet.DotNetProjectSystem' is disabled in the configuration.
[info]: OmniSharp.MSBuild.ProjectSystem
        No solution files found in 'c:\Users\Franklin\Documents\EfCoreTest'
[info]: OmniSharp.MSBuild.ProjectManager
        Queue project update for 'c:\Users\Franklin\Documents\EfCoreTest\EfCoreTest.csproj'
[info]: OmniSharp.Script.ScriptProjectSystem
        Detecting CSX files in 'c:\Users\Franklin\Documents\EfCoreTest'.
[info]: OmniSharp.Script.ScriptProjectSystem
        Could not find any CSX files
[info]: OmniSharp.WorkspaceInitializer
        Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpWorkspaceOptionsProvider
[info]: OmniSharp.WorkspaceInitializer
        Configuration finished.
[info]: OmniSharp.Stdio.Host
        Omnisharp server running using Stdio at location 'c:\Users\Franklin\Documents\EfCoreTest' on host 8780.
[info]: OmniSharp.MSBuild.ProjectManager
        Loading project: c:\Users\Franklin\Documents\EfCoreTest\EfCoreTest.csproj
[warn]: OmniSharp.MSBuild.ProjectManager
        Failed to load project file 'c:\Users\Franklin\Documents\EfCoreTest\EfCoreTest.csproj'.
c:\Users\Franklin\Documents\EfCoreTest\EfCoreTest.csproj(1,1)
Microsoft.Build.Exceptions.InvalidProjectFileException: Could not load SDK Resolver. A manifest file exists, but the path to the SDK Resolver DLL file could not be found. Manifest file path 'C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin\SdkResolvers\Microsoft.Build.NuGetSdkResolver\Microsoft.Build.NuGetSdkResolver.xml'. SDK resolver path: C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\Common7\IDE\CommonExtensions\Microsoft\NuGet\Microsoft.Build.NuGetSdkResolver.dll  c:\Users\Franklin\Documents\EfCoreTest\EfCoreTest.csproj
   at Microsoft.Build.Shared.ProjectFileErrorUtilities.VerifyThrowInvalidProjectFile(Boolean condition, String errorSubCategoryResourceName, BuildEventFileInfo projectFile, Exception innerException, String resourceName, Object[] args)
   at Microsoft.Build.BackEnd.SdkResolution.SdkResolverLoader.TryAddAssemblyFromManifest(String pathToManifest, String manifestFolder, List`1 assembliesList, ElementLocation location)
   at Microsoft.Build.BackEnd.SdkResolution.SdkResolverLoader.FindPotentialSdkResolvers(String rootFolder, ElementLocation location)
   at Microsoft.Build.BackEnd.SdkResolution.SdkResolverLoader.LoadResolvers(LoggingContext loggingContext, ElementLocation location)
   at Microsoft.Build.BackEnd.SdkResolution.SdkResolverService.Initialize(LoggingContext loggingContext, ElementLocation location)
   at Microsoft.Build.BackEnd.SdkResolution.SdkResolverService.ResolveSdk(Int32 submissionId, SdkReference sdk, LoggingContext loggingContext, ElementLocation sdkReferenceLocation, String solutionPath, String projectPath)
   at Microsoft.Build.BackEnd.SdkResolution.CachingSdkResolverService.<>c__DisplayClass3_0.<ResolveSdk>b__0(String key)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Build.BackEnd.SdkResolution.CachingSdkResolverService.ResolveSdk(Int32 submissionId, SdkReference sdk, LoggingContext loggingContext, ElementLocation sdkReferenceLocation, String solutionPath, String projectPath)
   at Microsoft.Build.Evaluation.Evaluator`4.ExpandAndLoadImportsFromUnescapedImportExpressionConditioned(String directoryOfImportingFile, ProjectImportElement importElement, List`1& projects, SdkResult& sdkResult, Boolean throwOnFileNotExistsError)
   at Microsoft.Build.Evaluation.Evaluator`4.ExpandAndLoadImports(String directoryOfImportingFile, ProjectImportElement importElement, SdkResult& sdkResult)
   at Microsoft.Build.Evaluation.Evaluator`4.EvaluateImportElement(String directoryOfImportingFile, ProjectImportElement importElement)
   at Microsoft.Build.Evaluation.Evaluator`4.PerformDepthFirstPass(ProjectRootElement currentProjectOrImport)
   at Microsoft.Build.Evaluation.Evaluator`4.Evaluate(ILoggingService loggingService, BuildEventContext buildEventContext)
   at Microsoft.Build.Evaluation.Project.Reevaluate(ILoggingService loggingServiceForEvaluation, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
   at Microsoft.Build.Evaluation.Project.ReevaluateIfNecessary(ILoggingService loggingServiceForEvaluation, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
   at Microsoft.Build.Evaluation.Project.Initialize(IDictionary`2 globalProperties, String toolsVersion, String subToolsetVersion, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
   at Microsoft.Build.Evaluation.Project..ctor(String projectFile, IDictionary`2 globalProperties, String toolsVersion, String subToolsetVersion, ProjectCollection projectCollection, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
   at Microsoft.Build.Evaluation.ProjectCollection.LoadProject(String fileName, IDictionary`2 globalProperties, String toolsVersion)
   at OmniSharp.MSBuild.ProjectLoader.EvaluateProjectFileCore(String filePath)
   at OmniSharp.MSBuild.ProjectLoader.BuildProject(String filePath)
   at OmniSharp.MSBuild.ProjectFile.ProjectFileInfo.Load(String filePath, ProjectLoader loader)
   at OmniSharp.MSBuild.ProjectManager.LoadOrReloadProject(String projectFilePath, Func`1 loader)

[fail]: OmniSharp.MSBuild.ProjectManager
        Attemped to update project that is not loaded: c:\Users\Franklin\Documents\EfCoreTest\EfCoreTest.csproj

The dotnet --info output is:

.NET Core SDK (reflecting any global.json):
 Version:   2.1.403
 Commit:    04e15494b6

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.17134
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\2.1.403\

Host (useful for support):
  Version: 2.1.5
  Commit:  290303f510

.NET Core SDKs installed:
  2.1.202 [C:\Program Files\dotnet\sdk]
  2.1.401 [C:\Program Files\dotnet\sdk]
  2.1.402 [C:\Program Files\dotnet\sdk]
  2.1.403 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

ErikSharp · 2018-10-17T02:03:41Z

@FranklinWhale @farzadmf - I had the same problem as you guys and the problem is that Omnisharp is choosing the MS Build instance for Visual Studio Build Tools 2017 as stated below:

Registered MSBuild instance: Visual Studio Build Tools 2017 15.8.28010.2041

As the exception says, the manifest file does exist, but if you look in it, it lists a relative path that is supposed to go to the SDK resolver. The path does not have the file listed nor some of the folders.

If you check the second MS Build instance listed, you will notice that the path does resolve to the correct file.

I couldn't figure out how to force Omnisharp to choose a different MS Build instance, so the fix I came up with was just to uninstall Visual Studio.

farzadmf · 2018-10-17T14:22:18Z

@ErikSharp I found some workarounds that resolved the issue for me, more specifically:

this workaround involving uninstalling the build tools
Or this workaround to rename the MSBuild directory there

Unfortunately, the issue doesn't seem to be considered serious here as none of the maintainers has commented on this.

akshita31 · 2018-10-17T18:04:10Z

@FranklinWhale Can you try the workaround as suggested by @farzadmf and see if that helps

FranklinWhale · 2018-10-18T02:19:50Z

@akshita31 After the Build Tools is uninstalled, the error no longer occurs.

FranklinWhale · 2018-11-02T04:53:41Z

@akshita31, @rchande: Is there any update on this issue? I am unable to have VS Build Tools and VS code on the same machine now...

pikadun · 2018-11-06T07:08:43Z

昨天安装了window build tools 之后，也出现了同样的问题

damianpawski · 2018-11-24T11:18:57Z

Hi, Any update on this as I am experiencing the same issue.

rchande · 2018-11-26T17:15:50Z

@FranklinWhale When you installed the Build Tools, did you include the .NET Core Build Tools workload?

FranklinWhale · 2018-11-26T17:40:31Z

@rchande Probably no, because the Build Tools is for C++ only. I build .NET Core applications via dotnet build.

rchande · 2018-11-26T17:59:22Z

@FranklinWhale How are you installing the build tools?

FranklinWhale · 2018-11-26T18:06:32Z

@rchande

Download Build Tools for Visual Studio 2017 at https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2017
Run the installer
Select Visual C++ build tools

ow-en · 2018-11-30T09:38:26Z

+1 on this issue, and as the above has noted, uninstalling build-tools does not seem like a practical/tenable workaround.

mjharper84 · 2018-11-30T14:24:35Z

I also have this issue - in my case the latest Node installation (10.13.0) had an option to install ms build tools

akshita31 · 2018-11-30T23:32:04Z

The solution here might be to install the .NET Core Build tools as stated in a similar issue here: OmniSharp/omnisharp-roslyn#1311 (comment)

akshita31 · 2018-11-30T23:32:35Z

@owensource @mjharper84 @FranklinWhale Can you try doing the above and checking if it works ?

FranklinWhale · 2018-12-01T18:37:22Z

@akshita31 That works and I now know via OmniSharp/omnisharp-roslyn#1311 that:

It is not currently possible to detect whether .NET Core support is present in a MSBuild
Option to control whether MSBuild to use has not been implemented yet and is currently tracked by Provide options to control MSBuild discovery and selection OmniSharp/omnisharp-roslyn#1186

ShenduoZhang · 2018-12-10T09:40:19Z

Same issue on MacBook Pro 15 2018, Latest Mojave. Project was created in virtual windows.

jadesong-nsuslab · 2018-12-14T06:40:32Z

In my case, I updated 2.1 to 2.2 and then occcured same issue.

ShenduoZhang · 2018-12-14T06:46:23Z

One more thing to say, things work well in Visual Studio(in virtual Win 10), but not in Visual Studio Code(Mojave).
I can reproduce it and send you the log. I've get my project done in virtual machine, but this really troubled me a lot. My laptop cannot run virtual for hours without a plugin.😂

colotiline · 2018-12-14T09:24:34Z

Fixed by reinstalling Omnisharp extension in VS Code.

mjharper84 · 2018-12-14T10:23:33Z

The suggestion to install .net core build tools by @akshita31 fixed it for me, reinstalling Omnisharp did not fix it https://user-images.githubusercontent.com/3347530/46700117-8e488e80-cbe1-11e8-851c-13cbd8587815.png

akshita31 · 2018-12-14T19:27:19Z

For everyone who hits this issue, please install the ".NET Core Build Tools" workload in Visual Studio.

akshita31 · 2018-12-14T19:30:20Z

@martyrzsd Please file a separate issue with the relevant environment information.

It appears that we know the solution to this issue and there is more work being tracked here: OmniSharp/omnisharp-roslyn#1186, that will make the experience better.

I will close this issue now. If there are any remaining concerns please let us know

phillijw · 2018-12-31T15:23:23Z

Solution for me was to update csproj to target 2.1 instead of 2.0 because I had 2.1 sdk installed.

Moortiii · 2019-04-15T09:19:34Z

I realize that the origin poster was on Windows, but this problem occured for me on Linux and I couldn't find a solution in any of the top threads. I'm not sure why, but the official mono-documentations says:

The package mono-complete should be installed to install everything - this should cover most cases of "assembly not found" errors.

At best I feel like this is highly misleading as it does not install compile-dependencies. If you're on a linux distribution, follow the instructions at this link to install the mono-devel package. At the time of writing this can be done using: sudo apt install mono-devel on Ubuntu 18.04. After that, you may need to install mono-complete as well, but this finally fixed the errors for me.

utybo · 2019-04-28T13:13:50Z

I encountered this issue, was resolved by uninstalling the VS 2017 Build Tools I had installed.

mm-jeremy · 2019-06-16T22:39:59Z

@Moortiii Downloading and installing Mono from your link worked for me on MacOS Mojave 10.14.5. Thanks!

mslot · 2020-05-10T00:15:50Z

I am on Windows 10 using VS Code, WSL and Spacemacs.

I had this issue as well, and found out, if i build my projects under WSL, with dotnet, that is, dotnet under linux, i had a lot of references i obj/[project_name].csproj.nuget.dgspec.json pointing to Linux paths (/mnt/ etc) when using plain dotnet and Windows paths (C:// etc) when using dotnet.exe from WSL. I think Omnisharp needs this info somehow.

By deleting all my obj folders (I deleted bin folders also just to be safe) in by project, and restarted VS Code, it helped. I got intellisense back, both in VS Code and Spacemacs. If using WSL, build your projects with dotnet.exe instead of plain dotnet.

Hope this helps someone.

VS code versions > 2019 doesn't yet support important libraries that are needed to run runner such as .NET, etc. Ex: dotnet/vscode-csharp#2507

tanerhacioglu · 2020-11-02T14:17:46Z

resolving when installing older and stable sdk version

NateCollins11 · 2021-01-26T02:17:42Z

I was stuck with this issue and pretty much the exact same error log and nothing I saw on forums solved it for about a week, but in the end all I had to do was install the latest mono and change the "Omnisharp: Use Global Mono" to always, and then it was fine.

I had tried about 50 things to get omnisharp working, so its possible that something else i did contributed to it eventually working, but I figured I would put this here in case anyone has the same problem that I was having.

rchande added Bug Needs More Info labels Sep 10, 2018

johnnyreilly mentioned this issue Sep 11, 2018

OmniSharp.MSBuild.ProjectLoader The "GetReferenceNearestTargetFrameworkTask" task was not found #2510

Closed

akshita31 reopened this Oct 18, 2018

akshita31 closed this as completed Dec 14, 2018

ethanchewy added a commit to ethanchewy/runner that referenced this issue Jun 8, 2020

Update documentation to recommend VS code 2019

768d140

VS code versions > 2019 doesn't yet support important libraries that are needed to run runner such as .NET, etc. Ex: dotnet/vscode-csharp#2507

ethanchewy mentioned this issue Jun 8, 2020

Update documentation to recommend VS code 2019 actions/runner#524

Closed

Fail: OmniSharp.MSBuild.ProjectManager, Attemped to update project that is not loaded #2507

Fail: OmniSharp.MSBuild.ProjectManager, Attemped to update project that is not loaded #2507

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