Omnisharp in VS Code produces a lot of warnings about a Unity project. Why?

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Omnisharp in VS Code produces a lot of warnings about a Unity project. Why?

When I open a script in VS Code from a Unity Editor here is what I see:

enter image description here

The Omnisharp produces warning. Here are a few of them:

[warn]: OmniSharp.MSBuild.ProjectLoader
        The referenced project 'Unity.Timeline.Editor.csproj' does not exist.
[warn]: OmniSharp.MSBuild.ProjectLoader
        The referenced project 'Unity.VSCode.Editor.csproj' does not exist.
[warn]: OmniSharp.MSBuild.ProjectLoader
        The referenced project 'Unity.TextMeshPro.Editor.csproj' does not exist.
[warn]: OmniSharp.MSBuild.ProjectLoader
        The referenced project 'UnityEngine.UI.csproj' does not exist.
[warn]: OmniSharp.MSBuild.ProjectLoader
        The referenced project 'Unity.Timeline.csproj' does not exist.
[warn]: OmniSharp.MSBuild.ProjectLoader
...
[warn]: OmniSharp.MSBuild.ProjectManager
        Expected project reference c:\Projects\Unity\Combo Bombo\Unity.2D.Sprite.Editor.csproj to be already loaded for project Assembly-CSharp
[warn]: OmniSharp.MSBuild.ProjectManager
        Expected project reference c:\Projects\Unity\Combo Bombo\Unity.2D.Tilemap.Editor.csproj to be already loaded for project Assembly-CSharp
[warn]: OmniSharp.MSBuild.ProjectManager
        Expected project reference c:\Projects\Unity\Combo Bombo\Unity.TextMeshPro.csproj to be already loaded for project Assembly-CSharp
[warn]: OmniSharp.MSBuild.ProjectManager
        Expected project reference c:\Projects\Unity\Combo Bombo\UnityEditor.UI.csproj to be already loaded for project Assembly-CSharp

Does anyone know why the warnings happen and how could I fix them?

I am not sure what else should I provide for a successful diagnose of the issue. So, could you, please, ask in comments in case I have to tell something else about the issue for a successful diagnose.

I have the 1.42.1 VS Code version:

enter image description here

omnisharp visual-studio-code unity3d
4 Answers

This issue has also been solved in 1.2.0. Just update your vs code package to this version via the package manager. Then regenerate your project files by navigating to Edit -> Preferences -> Regenerate Project Files. Reopening a .cs file should then solve your problem.

user_109109830
user_88701960

If you downgrade to 1.1.3 and right after upgrade to 1.2.0 your problem should be fixed!

user_33414130

The fix that worked for me was closing VS Code, ticking "Generate all .csproj files" under Edit > Preferences > External tools, then going ti Assets > Open C# Project.

Additionally, in VS Code, make sure that .csproj and .sln file extensions aren't excluded under Edit > User (tab) > Text Editor > Files > Files: Exclude.

user_31910070
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