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If a project requires 4.0.4.1, NuGet will fetch it from nuget.org automatically when you run:

Without this package, features like System.Memory and modern JSON serialization would be much slower.

If you absolutely need version 4.0.4.1, get it via NuGet. For anything else, use the latest stable version (8.0.0 as of this writing) or rely on the version that comes with your .NET SDK (for .NET Core 3.1+ and .NET 5+, it’s often included implicitly).

System.runtime.compilerservices.unsafe Version 4.0.4.1 Download (iPhone)

If a project requires 4.0.4.1, NuGet will fetch it from nuget.org automatically when you run:

Without this package, features like System.Memory and modern JSON serialization would be much slower. If a project requires 4