A. Microsoft offers debugging tools for all versions and architectures of Windows OSs. These tools allow you to debug problem applications, drivers, and services. These tools are also used by some other tools, such as Microsoft's Diagnostic and Recovery Toolset (DART). Plus, you can actually use the debugging tools to debug the OS.
One of the primary utilities you'll use is WinDbg.exe, which provides a GUI for debugging tasks.
Both 64-bit versions and 32-bit versions are available from Microsoft's site.
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