Windows Registry files
The Windows Registry is a hierarchical database that stores various settings for the Windows operating system and applications.
Windows 3.1
Windows 3.1 uses the SHCC Windows Registry file format
Windows 9x/Me
On Windows 95, 98 and Me the Windows Registry files can be found in:
%SystemRoot%\
Windows 95, 98 and Me uses the CREG Windows Registry file format
Windows NT4 and later
On Windows NT4 and later the Windows Registry files can be found in:
%SystemRoot%\System32\Config\
%UserProfile%\
%UserProfile%\Local Settings\Application Data\Microsoft\Windows\
%UserProfile%\AppData\Local\Microsoft\Windows\
Windows NT4 and later uses the REGF Windows Registry file format