Windows 11 includes several tools to debug MSXML:
Key findings indicate that while MSXML versions 3.0, 4.0, and 6.0 are relevant, Microsoft strongly discourages their use in new development. Windows 11 natively supports MSXML 3.0 and 6.0, while MSXML 4.0 requires specific legacy runtimes that may pose security risks if not managed correctly. msxml windows11