What you'll learn

Production issues rarely match the "happy path." You need to reproduce the problem, pause execution at the right time, inspect what the app is actually doing, and then prove the fix works. In this course, Debugging and Testing with Visual Studio 2026, you'll gain the ability to investigate runtime behavior with the Visual Studio debugger and validate fixes with the built-in testing experience.

First, you'll explore how to start a productive debugging session using breakpoints, stepping, and execution control. Next, you'll discover how to inspect state with debugger windows (locals, watches, call stack) and diagnose common runtime failures such as exceptions and "it only happens sometimes" bugs. Finally, you'll learn how to run, debug, and organize automated tests using Test Explorer so you can confirm correctness and prevent regressions.

When you're finished with this course, you'll have the skills and knowledge of practical debugging and test execution in Visual Studio 2026 needed to diagnose issues faster and ship reliable fixes with confidence.

Homepage