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Why does middleware order matter?

Expert .NET Core
Quick Answer Each middleware wraps subsequent ones. Wrong order causes real bugs: placing authorization before authentication means HttpContext.User is empty at auth check time. Placing routing after your endpoint handler means routes never match. Exception handling must wrap everything รขโ‚ฌโ€ placing it last means unhandled exceptions from early middleware aren't caught.

Answer

Middleware runs exactly in registration order. Incorrect ordering breaks authentication, routing, exception handling, and static file behavior.

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This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.

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