Running on IIS locally is pretty rare, but if for some odd reason you decide to run IIS locally on your dev machine you might find yourself getting a 500.19 error which relates to an issue in the web.config configuration. The solution is simple enough: Make sure the ASP.NET Core Hosting Module is installed. In this post I describe in more detail what the problem is and why you need a seemingly superfluous extra install to get IIS and ASP.NET Core to cooperate on local dev machine.
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