Goto Tools-> NuGet Package manager -> Manage Package for Solution -> Microsoft.NETCore.Universal Windows Platform -> update latest version
and try again
Regards Vinoth.
You might also want to check if you have the latest version of the nuget extension. Although it should get updated automatically.
Also, click on "Updates" on the left to see if an update for nuget is available for you.
I think you need to install UWP tools, to do so, create new project -> Windows - > Universal, as attached.
Or you can download it separately from here
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