In the Windows Registry, which root key stores machine-wide settings for all users?

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Multiple Choice

In the Windows Registry, which root key stores machine-wide settings for all users?

Explanation:
Machine-wide settings for all users live under HKEY_LOCAL_MACHINE. This root key stores configuration that applies to the entire computer, including hardware, installed software, and system services, so changes here affect every user regardless of who is logged in. In contrast, settings specific to an individual user live under HKEY_CURRENT_USER, and user profiles live under HKEY_USERS. HKEY_CLASSES_ROOT deals with file associations and class registrations, not general machine-wide settings. So for settings that must apply to the whole machine, HKLM is the best choice.

Machine-wide settings for all users live under HKEY_LOCAL_MACHINE. This root key stores configuration that applies to the entire computer, including hardware, installed software, and system services, so changes here affect every user regardless of who is logged in. In contrast, settings specific to an individual user live under HKEY_CURRENT_USER, and user profiles live under HKEY_USERS. HKEY_CLASSES_ROOT deals with file associations and class registrations, not general machine-wide settings. So for settings that must apply to the whole machine, HKLM is the best choice.

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