UseExceptionHandler, IExceptionHandler (.NET 8), ProblemDetails, middleware vs filters, logging errors Unhandled exceptions are inevitable. The question is not whether they will happen — it's whether your API returns a clear, structured error response or exposes a raw stack trace to the client. Why You Need Global Exception Handling Without it: Unhandled exceptions return 500 Internal Server Error with no useful body Stack traces may be leaked to clients in non-production environments Logging is inconsistent — some exceptions get logged, others disappear Every controller has its own try-catch — duplicated and inconsistent With it: Every unhandled exception is caught in one place Errors are logged consistently Clients receive a structured, predictable error response Controllers stay clean — no try-catch everywhere Approach 1: UseExceptionHandler Middleware The simplest and most compatible approach. Works in all ASP.NET Core versions. app . UseExceptionHandler ( errorApp => { errorApp .…