Steven Giesel • 4/14/2025

A custom 404 page in Blazor Web Apps

This technical article explains how to implement a custom 404 page in modern Blazor Web Apps (.NET 8+), where the standard <NotFound> tag in the Router component is ineffective. It provides a step-by-step solution using a fallback page with a specific route template (@page "/{*route:nonfile}") and includes a practical example from the author's company website.

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#Web Development #c #blazor