Registry Organization on xBased Windows

With the introduction of Windows XP Professional x64 Edition, a separate view was added to the Registry for 32-bit applications to prevent data in 64-bit Registry keys from being overwritten by keys and values installed by 32-bit programs. Program settings for 64-bit programs are still stored in HKEY_LOCAL_MACHINE\Software, while settings for 32-bit programs run are now stored in a new key called HKEY_LOCAL_MACHINE\Software\WOW6432Node.

The Microsoft documentation frequently uses the term "WOW64" which stands for "Windows32-on-Windows 64-bit."

Let's take a look at three important aspects of the Registry on x64-based Windows.

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