How to handle 404 errors in ASP.NET Core MVC

ASP.NET Core MVC is the .NET Core counterpart of the ASP.NET MVC framework for building cross-platform, scalable, high-performance web applications and APIs using the Model-View-Controller design pattern. Surprisingly, although ASP.NET Core provides plenty of options for handling 404 errors gracefully, the ASP.NET Core MVC runtime doesn’t take advantage of them by default.

As a result, when a web page is not found and a 404 error is returned by the application, ASP.NET Core MVC presents only a generic browser error page (as shown in Figure 1 below). This article discusses three options in ASP.NET Core we can use to handle 404 errors more gracefully.

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