I wanted to try out Blazor. I've installed .NET Core 3.0 preview 5 SDK, Blazor VS extension to enable project templates. I can create Blazor project, but I can't run it - I constantly get this notification.
In some tutorials I see that there should be a checkbox in VS options - to enable using of preview SDKs.
But it's not there in VS2019! Version is 16.1.1
NET SDK version, you also need to set the option to enable previews in Visual Studio. Go to Tools > Options > Environment > Preview Features, and make sure that Use previews of the . NET Core SDK is checked.
As you have seen, Visual Studio 2019 installer includes . NET Core 2.1 but not . NET Core 3.
Visual Studio 2019 Supports all Version of . NET Core including the latest version 3.1. You can use Visual Studio 2017, only if you are using .
Thanks to @Kirk Woll. They moved this checkbox indeed.
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