WindowsDX source project won't load

I’m trying to add support for 32 bit depth buffers to the WindowsDX source (I need it for isometric world with more than 2^24 blocks).

So I cloned the source, ran Protobuild.exe, opened MonoGame.Framework.WindowsDX.sln in Visual Studio 2017 and then the project load failed.

I looked into the .csproj file and saw that it uses .NET Core 3 so I installed that but then the project load still failed.

Am I doing something wrong?

When I try to compile DesktopGL it works just fine.