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Installing .NET Core 2
If the VS installer does not include the version of .NET Core that you want to work with, then you can install it separately. Download the installer from the Core website and execute it. The reason that the SDK is decoupled from the main VS installation is so that it can be iterated on in a faster way. You will get a stable version shipped with VS, but it may be a little dated:
The .NET Core command-line tools include telemetry turned on by default. This means they report analytics information back to Microsoft, but you can disable this by setting an environment variable. Visual Studio and VS Code also send telemetry by default, but this can be disabled via the UI (or editing the JSON configuration in VS Code).