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v1.23.1 fails to load Unity project, worked with v1.23.0

See original GitHub issue

Issue Description

After upgrading to v1.23.1, I get “Some projects have trouble loading. Please review the output for more details.” and autocomplete etc. doesn’t work on my Unity 2019.4 project. Restarting vscode does not help.

Downgrading to v1.23.0 fixes it.

Platform: Ubuntu 18.04 with the latest Mono installed from their APT repo deb https://download.mono-project.com/repo/ubuntu stable-bionic main and with dotnet 3.1.401 installed from Microsoft’s APT repo.

Logs

OmniSharp log

Starting OmniSharp server at 8/20/2020, 10:06:01 AM Target: /path/to/project/projectname.sln

OmniSharp server started. Path: /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/run PID: 15283

    Starting OmniSharp on ubuntu 18.4 (x64)

    DotNetPath set to dotnet

    Located 1 MSBuild instance(s)
        1: StandAlone 16.8.0 - "/home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin"

    MSBUILD_EXE_PATH environment variable set to '/home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/MSBuild.exe'

    Registered MSBuild instance: StandAlone 16.8.0 - "/home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin"
        CscToolExe = csc.exe
        MSBuildToolsPath = /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin
        CscToolPath = /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Roslyn
        BypassFrameworkInstallChecks = true
        MSBuildExtensionsPath = /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild

    Detecting Cake files in '/path/to/project'.

    Could not find any Cake files

    Detecting projects in '/path/to/project/projectname.sln'.

    Queue project update for '/path/to/project/com.unity.multiplayer-hlapi.Runtime.csproj'

    Queue project update for '/path/to/project/UnityEngine.UI.csproj'

    Queue project update for '/path/to/project/UnityEngine.TestRunner.csproj'

    Queue project update for '/path/to/project/Assembly-CSharp.csproj'

    Queue project update for '/path/to/project/com.unity.multiplayer-hlapi.Tests.csproj'

    Queue project update for '/path/to/project/ThirdParty.csproj'

    Queue project update for '/path/to/project/ProjectNameProtoMain.csproj'

    Queue project update for '/path/to/project/GooglePlayGames.csproj'

    Queue project update for '/path/to/project/PxlAssembly.csproj'

    Queue project update for '/path/to/project/PixelIAP.csproj'

    Queue project update for '/path/to/project/Coffee.SoftMaskForUGUI.csproj'

    Queue project update for '/path/to/project/PxlPlayModeTestsAssembly.csproj'

    Queue project update for '/path/to/project/UnityEditor.TestRunner.csproj'

    Queue project update for '/path/to/project/Unity.2D.Sprite.Editor.csproj'

    Queue project update for '/path/to/project/com.unity.multiplayer-hlapi.Editor.csproj'

    Queue project update for '/path/to/project/Coffee.SoftMaskForUGUI.Editor.csproj'

    Queue project update for '/path/to/project/UnityEditor.UI.csproj'

    Queue project update for '/path/to/project/Unity.2D.Tilemap.Editor.csproj'

    Queue project update for '/path/to/project/ThirdParty-Editor.csproj'

    Queue project update for '/path/to/project/Assembly-CSharp-Editor.csproj'

    Queue project update for '/path/to/project/PxlTestsAssembly.csproj'

    Queue project update for '/path/to/project/GooglePlayGamesEditor.csproj'

    Queue project update for '/path/to/project/com.unity.multiplayer-weaver.Editor.csproj'

    Queue project update for '/path/to/project/Unity.VSCode.Editor.csproj'

    Queue project update for '/path/to/project/com.unity.multiplayer-hlapi.EditorTests.csproj'

    Detecting CSX files in '/path/to/project'.

    Could not find any CSX files

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

    Loading project: /path/to/project/com.unity.multiplayer-hlapi.Runtime.csproj

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

    Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.ImplementTypeWorkspaceOptionsProvider, Order: 110

    Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.BlockStructureWorkspaceOptionsProvider, Order: 140

    Configuration finished.

    Omnisharp server running using Stdio at location '/path/to/project' on host 14751.

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/com.unity.multiplayer-hlapi.Runtime.csproj'.

/path/to/project/com.unity.multiplayer-hlapi.Runtime.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/UnityEngine.UI.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/UnityEngine.UI.csproj'.

/path/to/project/UnityEngine.UI.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/UnityEngine.TestRunner.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/UnityEngine.TestRunner.csproj'.

/path/to/project/UnityEngine.TestRunner.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/Assembly-CSharp.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/Assembly-CSharp.csproj'.

/path/to/project/Assembly-CSharp.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/com.unity.multiplayer-hlapi.Tests.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/com.unity.multiplayer-hlapi.Tests.csproj'.

/path/to/project/com.unity.multiplayer-hlapi.Tests.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/ThirdParty.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/ThirdParty.csproj'.

/path/to/project/ThirdParty.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/ProjectNameProtoMain.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/ProjectNameProtoMain.csproj'.

/path/to/project/ProjectNameProtoMain.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/GooglePlayGames.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/GooglePlayGames.csproj'.

/path/to/project/GooglePlayGames.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/PxlAssembly.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/PxlAssembly.csproj'.

/path/to/project/PxlAssembly.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/PixelIAP.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/PixelIAP.csproj'.

/path/to/project/PixelIAP.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/Coffee.SoftMaskForUGUI.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/Coffee.SoftMaskForUGUI.csproj'.

/path/to/project/Coffee.SoftMaskForUGUI.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/PxlPlayModeTestsAssembly.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/PxlPlayModeTestsAssembly.csproj'.

/path/to/project/PxlPlayModeTestsAssembly.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/UnityEditor.TestRunner.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/UnityEditor.TestRunner.csproj'.

/path/to/project/UnityEditor.TestRunner.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/Unity.2D.Sprite.Editor.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/Unity.2D.Sprite.Editor.csproj'.

/path/to/project/Unity.2D.Sprite.Editor.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/com.unity.multiplayer-hlapi.Editor.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/com.unity.multiplayer-hlapi.Editor.csproj'.

/path/to/project/com.unity.multiplayer-hlapi.Editor.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/Coffee.SoftMaskForUGUI.Editor.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/Coffee.SoftMaskForUGUI.Editor.csproj'.

/path/to/project/Coffee.SoftMaskForUGUI.Editor.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/UnityEditor.UI.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/UnityEditor.UI.csproj'.

/path/to/project/UnityEditor.UI.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/Unity.2D.Tilemap.Editor.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/Unity.2D.Tilemap.Editor.csproj'.

/path/to/project/Unity.2D.Tilemap.Editor.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/ThirdParty-Editor.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/ThirdParty-Editor.csproj'.

/path/to/project/ThirdParty-Editor.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/Assembly-CSharp-Editor.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/Assembly-CSharp-Editor.csproj'.

/path/to/project/Assembly-CSharp-Editor.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/PxlTestsAssembly.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/PxlTestsAssembly.csproj'.

/path/to/project/PxlTestsAssembly.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/GooglePlayGamesEditor.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/GooglePlayGamesEditor.csproj'.

/path/to/project/GooglePlayGamesEditor.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/com.unity.multiplayer-weaver.Editor.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/com.unity.multiplayer-weaver.Editor.csproj'.

/path/to/project/com.unity.multiplayer-weaver.Editor.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/Unity.VSCode.Editor.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/Unity.VSCode.Editor.csproj'.

/path/to/project/Unity.VSCode.Editor.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Loading project: /path/to/project/com.unity.multiplayer-hlapi.EditorTests.csproj

    The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Failed to load project file '/path/to/project/com.unity.multiplayer-hlapi.EditorTests.csproj'.

/path/to/project/com.unity.multiplayer-hlapi.EditorTests.csproj /home/username/.vscode/extensions/ms-dotnettools.csharp-1.23.1/.omnisharp/1.37.0/omnisharp/.msbuild/Current/Bin/Microsoft.Common.CurrentVersion.targets(1178,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks

    Attempted to update project that is not loaded: /path/to/project/com.unity.multiplayer-hlapi.Runtime.csproj

    Attempted to update project that is not loaded: /path/to/project/UnityEngine.UI.csproj

    Attempted to update project that is not loaded: /path/to/project/UnityEngine.TestRunner.csproj

    Attempted to update project that is not loaded: /path/to/project/Assembly-CSharp.csproj

    Attempted to update project that is not loaded: /path/to/project/com.unity.multiplayer-hlapi.Tests.csproj

    Attempted to update project that is not loaded: /path/to/project/ThirdParty.csproj

    Attempted to update project that is not loaded: /path/to/project/ProjectNameProtoMain.csproj

    Attempted to update project that is not loaded: /path/to/project/GooglePlayGames.csproj

    Attempted to update project that is not loaded: /path/to/project/PxlAssembly.csproj

    Attempted to update project that is not loaded: /path/to/project/PixelIAP.csproj

    Attempted to update project that is not loaded: /path/to/project/Coffee.SoftMaskForUGUI.csproj

    Attempted to update project that is not loaded: /path/to/project/PxlPlayModeTestsAssembly.csproj

    Attempted to update project that is not loaded: /path/to/project/UnityEditor.TestRunner.csproj

    Attempted to update project that is not loaded: /path/to/project/Unity.2D.Sprite.Editor.csproj

    Attempted to update project that is not loaded: /path/to/project/com.unity.multiplayer-hlapi.Editor.csproj

    Attempted to update project that is not loaded: /path/to/project/Coffee.SoftMaskForUGUI.Editor.csproj

    Attempted to update project that is not loaded: /path/to/project/UnityEditor.UI.csproj

    Attempted to update project that is not loaded: /path/to/project/Unity.2D.Tilemap.Editor.csproj

    Attempted to update project that is not loaded: /path/to/project/ThirdParty-Editor.csproj

    Attempted to update project that is not loaded: /path/to/project/Assembly-CSharp-Editor.csproj

    Attempted to update project that is not loaded: /path/to/project/PxlTestsAssembly.csproj

    Attempted to update project that is not loaded: /path/to/project/GooglePlayGamesEditor.csproj

    Attempted to update project that is not loaded: /path/to/project/com.unity.multiplayer-weaver.Editor.csproj

    Attempted to update project that is not loaded: /path/to/project/Unity.VSCode.Editor.csproj

    Attempted to update project that is not loaded: /path/to/project/com.unity.multiplayer-hlapi.EditorTests.csproj

C# log

Installing C# dependencies... Platform: linux, x86_64, name=ubuntu, version=18.04

Downloading package ‘OmniSharp for Linux (x64)’ (47056 KB)… Done! Validating download… Integrity Check succeeded. Installing package ‘OmniSharp for Linux (x64)’

Downloading package ‘.NET Core Debugger (linux / x64)’ (54671 KB)… Done! Validating download… Integrity Check succeeded. Installing package ‘.NET Core Debugger (linux / x64)’

Downloading package ‘Razor Language Server (Linux / x64)’ (52580 KB)… Done! Installing package ‘Razor Language Server (Linux / x64)’

Finished

Environment information

VSCode version: 1.48.0 C# Extension: 1.23.1

Mono Information

OmniSharp using built-in mono

Dotnet Information

.NET Core SDK (reflecting any global.json): Version: 3.1.401 Commit: 39d17847db

Runtime Environment: OS Name: ubuntu OS Version: 18.04 OS Platform: Linux RID: ubuntu.18.04-x64 Base Path: /usr/share/dotnet/sdk/3.1.401/

Host (useful for support): Version: 3.1.7 Commit: fcfdef8d6b

.NET Core SDKs installed: 2.2.402 [/usr/share/dotnet/sdk] 3.0.103 [/usr/share/dotnet/sdk] 3.1.401 [/usr/share/dotnet/sdk]

.NET Core runtimes installed: Microsoft.AspNetCore.All 2.2.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.2.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.0.3 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.7 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.2.8 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.0.3 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.7 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

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

Visual Studio Code Extensions

Extension	Author	Version
cpptools	ms-vscode	0.29.0
csharp	ms-dotnettools	1.23.1
jsonnet	heptio	0.1.0
jsonnet-formatter	xrc-inc	0.3.0
unity-debug	Unity	2.7.5
vscode-eclipse-keybindings	alphabotsec	0.12.0
vscode-proto3	zxh404	0.4.2

Issue Analytics

State:
Created 3 years ago
Reactions:8
Comments:32 (10 by maintainers)

Top GitHub Comments

99reactions

filipwcommented, Aug 20, 2020

The problem is that the new .NET Core 3.1 SDK isn’t supported by any current Mono release, so the setting "omnisharp.useGlobalMono" has been changed to "never" in 1.23.1 (see changelog https://github.com/OmniSharp/omnisharp-vscode/blob/master/CHANGELOG.md#1231-not-yet-released). This however is incompatible with Mono-based development e.g. Unity.

You can change it back yourself to "omnisharp.useGlobalMono": "always" which should fix your scenario.

16reactions

derwaldgeistcommented, Aug 20, 2020

Sample problem here on macOS. It’s really annoying that this all of a sudden broke Unity support in VSCode. 😕 This will affect a lot of people, I guess.

Hint for other users: The setting in the OmniSharp config dialog is called “Omnisharp: Use Global Mono”. I can confirm that setting this to “always” solved the problem.