Search notes:

Registry: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts

This registry key seems to list the installed fonts.

See also

%SystemRoot%\Fonts
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Console\TrueTypeFont
The parent key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion

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