OmniSharp.MSBuild.ProjectManager Failed to load project file

Environment data

dotnet --info output:

.NET Core SDK (reflecting any global.json): Version: 2.2.401 Commit: 729b316c13

Runtime Environment: OS Name: Windows OS Version: 10.0.18362 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\2.2.401\

Host (useful for support): Version: 2.2.6 Commit: 7dac9b1b51

.NET Core SDKs installed: 2.2.401 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed: Microsoft.AspNetCore.All 2.2.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.2.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.2.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

VS Code version: 1.36.1 C# Extension version: 1.21.0

Steps to reproduce

Press F5 to begin debugging with .NET Core

Expected behavior

As the dotnet run does

Actual behavior

Starting OmniSharp server at 7/28/2019, 4:38:05 PM Target: c:\Users\limen\myApp\classes

OmniSharp server started. Path: C:\Users\limen.vscode\extensions\ms-vscode.csharp-1.21.0.omnisharp\1.34.0\OmniSharp.exe PID: 11920

    Starting OmniSharp on Windows 6.2.9200.0 (x64)

    DotNetPath set to dotnet

    Located 2 MSBuild instance(s)
        1: Visual Studio Community 2019 16.2.29123.88 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin"
        2: StandAlone 16.0 - "c:\Users\limen\.vscode\extensions\ms-vscode.csharp-1.21.0\.omnisharp\1.34.0\.msbuild\Current\Bin"

    Registered MSBuild instance: Visual Studio Community 2019 16.2.29123.88 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin"

    Detecting Cake files in 'c:\Users\limen\myApp\classes'.

    Could not find any Cake files

    No solution files found in 'c:\Users\limen\myApp\classes'

    Queue project update for 'c:\Users\limen\myApp\classes\classes.csproj'

    Detecting CSX files in 'c:\Users\limen\myApp\classes'.

    Could not find any CSX files

    Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpFormattingWorkspaceOptionsProvider, Order: 0

    Loading project: c:\Users\limen\myApp\classes\classes.csproj

    Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.RenameWorkspaceOptionsProvider, Order: 100

    Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.EditorConfigWorkspaceOptionsProvider, Order: 200

    Configuration finished.

    Omnisharp server running using Stdio at location 'c:\Users\limen\myApp\classes' on host 10016.

    Failed to load project file 'c:\Users\limen\myApp\classes\classes.csproj'.

c:\Users\limen\myApp\classes\classes.csproj(1,1) Microsoft.Build.Exceptions.InvalidProjectFileException: The SDK ‘Microsoft.NET.Sdk’ specified could not be found. c:\Users\limen\myApp\classes\classes.csproj at Microsoft.Build.Shared.ProjectErrorUtilities.ThrowInvalidProject(String errorSubCategoryResourceName, IElementLocation elementLocation, String resourceName, Object[] args) at Microsoft.Build.Evaluation.Evaluator4.ExpandAndLoadImportsFromUnescapedImportExpressionConditioned(String directoryOfImportingFile, ProjectImportElement importElement, List1& projects, SdkResult& sdkResult, Boolean throwOnFileNotExistsError) at Microsoft.Build.Evaluation.Evaluator4.ExpandAndLoadImports(String directoryOfImportingFile, ProjectImportElement importElement, SdkResult& sdkResult) at Microsoft.Build.Evaluation.Evaluator4.EvaluateImportElement(String directoryOfImportingFile, ProjectImportElement importElement) at Microsoft.Build.Evaluation.Evaluator4.PerformDepthFirstPass(ProjectRootElement currentProjectOrImport) at Microsoft.Build.Evaluation.Evaluator4.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(IDictionary2 globalProperties, String toolsVersion, String subToolsetVersion, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext) at Microsoft.Build.Evaluation.Project..ctor(String projectFile, IDictionary2 globalProperties, String toolsVersion, String subToolsetVersion, ProjectCollection projectCollection, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext) at Microsoft.Build.Evaluation.ProjectCollection.LoadProject(String fileName, IDictionary2 globalProperties, String toolsVersion) at OmniSharp.MSBuild.ProjectLoader.EvaluateProjectFileCore(String filePath) in C:\projects\omnisharp-roslyn\src\OmniSharp.MSBuild\ProjectLoader.cs:line 129 at OmniSharp.MSBuild.ProjectLoader.BuildProject(String filePath) in C:\projects\omnisharp-roslyn\src\OmniSharp.MSBuild\ProjectLoader.cs:line 72 at OmniSharp.MSBuild.ProjectFile.ProjectFileInfo.Load(String filePath, ProjectIdInfo projectIdInfo, ProjectLoader loader) in C:\projects\omnisharp-roslyn\src\OmniSharp.MSBuild\ProjectFile\ProjectFileInfo.cs:line 95 at OmniSharp.MSBuild.ProjectManager.LoadOrReloadProject(String projectFilePath, Func1 loader) in C:\projects\omnisharp-roslyn\src\OmniSharp.MSBuild\ProjectManager.cs:line 308

    Attempted to update project that is not loaded: c:\Users\limen\myApp\classes\classes.csproj

    Miscellaneous file: c:\Users\limen\myApp\classes\BankAccount.cs added to workspace

    Miscellaneous file: c:\Users\limen\myApp\classes\Program.cs added to workspace

[lliill]

In fact, I don’t really want to install vs studio…

[akshita31]

https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2019

Can you try installing the build tools from the above ?