How to properly configure Godot Mono with VS Code?

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How to properly configure Godot Mono with VS Code?

svenkay

Apparently, it should be as simple as:

Download the Mono version
Download and install .NET SDK
Select VS Code as an external code editor.
Create a script
Generate a C# solution/Build project
Open the script/VS Code
That's it, it should be working by now

Unfortunately, that's not my case. It seems that the problem comes from VS, rather than Godot. Upon loading the solution, a message appears at the notification area that states the following:

Some projects have trouble loading. Please review the output for more details.

The only thing that I think could be relevant to all of this was the following:

Microsoft.Build.Exceptions.InvalidProjectFileException: The SDK 'Microsoft.NET.Sdk' specified could not be found.

None of the workarounds listed here worked. If I click anywhere on the script after Omnisharp finished loading, the message No document found. appears at the console. It then proceeds to create a miscellaneous file. Reinstalling didn't work. It happens with both the latest stable (3.5.1) and beta (4.0 b10) versions of Godot.