Omnisharp-vscode: C# extension not working with .NET Core 3.0.100

[PraveenGajjalaTR]

Not sure why extension is not picking the installed .NET Core 3.0.100 version.

OmniSharp.MSBuild.ProjectLoader not picking the latest installed .NET Core 3.0?

Below is the OmniSharp Log:

Please paste the output from yoStarting OmniSharp server at 10/9/2019, 1:32:46 PM
Target: c:\code\samples\abc

OmniSharp server started.
Path: C:\Users\xxxx.vscode\extensions\ms-vscode.csharp-1.21.4.omnisharp\1.34.4\OmniSharp.exe
PID: 11288

    Starting OmniSharp on Windows 6.1.7601.65536 (x64)
    DotNetPath set to dotnet
    Located 4 MSBuild instance(s)
        1: Visual Studio Professional 2017 15.9.28307.770 - "C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\Bin"
        2: Visual Studio Professional 2019 16.2.29215.179 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin"
        3: Visual Studio Build Tools 2017 15.9.28307.586 - "C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin"
        4: StandAlone 16.0 - "C:\Users\U0159381\.vscode\extensions\ms-vscode.csharp-1.21.4\.omnisharp\1.34.4\.msbuild\Current\Bin"
    Registered MSBuild instance: Visual Studio Professional 2019 16.2.29215.179 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin"
    Detecting Cake files in 'c:\code\samples\translates\translation-apis'.
    Could not find any Cake files
    No solution files found in 'c:\code\samples\translates\translation-apis'
    Queue project update for 'c:\code\samples\translates\translation-apis\TranslateService\TranslateService.csproj'
    Detecting CSX files in 'c:\code\samples\translates\translation-apis'.
    Could not find any CSX files
    Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpFormattingWorkspaceOptionsProvider, Order: 0
    Loading project: c:\code\samples\translates\translation-apis\TranslateService\TranslateService.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:\code\samples\translates\translation-apis' on host 18112.
    The current .NET SDK does not support targeting .NET Core 3.0.  Either target .NET Core 2.2 or lower, or use a version of the .NET SDK that supports .NET Core 3.0.
    Failed to load project file 'c:\code\samples\translates\translation-apis\TranslateService\TranslateService.csproj'.

c:\code\samples\translates\translation-apis\TranslateService\TranslateService.csproj
C:\Program Filesdotnet\sdk\2.2.107\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.TargetFrameworkInference.targets(137,5): Error: The current .NET SDK does not support targeting .NET Core 3.0. Either target .NET Core 2.2 or lower, or use a version of the .NET SDK that supports .NET Core 3.0.

    Attempted to update project that is not loaded: c:\code\samples\translates\translation-apis\TranslateService\TranslateService.csproj

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[filipw]

OmniSharp uses MSBuild from Visual Studio 2019 when it's installed on your machine. In your case, you have Visual Studio Professional 2019 16.2.29215.179 which doesn't support .NET Core 3.0. You should uninstall it (then OmniSharp will use its built in MSBuild) or upgrade to 16.3.x, which is required by .NET Core 3.0.