This key and its subkeys are among the most frequently accessed and modified regions of the registry by users. The data is utilized by all users that access the machine.

HKLM (HKEY_LOCAL_MACHINE): It contains computer-specific information such as installed hardware, program settings, and other data.HKCU (HKEY_CURRENT_USER): It contains information about the individual who is presently signed in to Windows as well as their settings.HKCR (HKEY_CLASSES_ROOT): It describes file type, file extension, and OLE information.What do they mean? What do they imply? This section provides a quick overview of the most frequent root keys and the values they contain. When you initially use the Windows Registry Editor, it shows all registry values in root keys. Information about registry root keys & Windows registry values When software is installed, for example, a new subkey containing settings such as a program's location, version, and how to start the application is added to the Windows Registry. In other words, the registry, also known as the Windows Registry, stores information, settings, choices, and other data for applications and devices installed on all versions of Microsoft Windows. The registry also provides access to counters that may be used to profile system performance. The registry can be accessed by the kernel, device drivers, services, Security Accounts Manager, and user interfaces. The registry, often known as the Windows registry, is a database containing information, settings, choices, and other variables for software and devices installed on all versions of Microsoft Windows.

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