What is ntuser.dat?

ntuser.dat is a system file in the Windows operating system that contains the user-specific configuration settings and preferences for each individual user account on a computer. It is located in the user profile folder (\Users\username) and is a registry hive file that stores information such as desktop settings, application preferences, and other personalized settings.

The ntuser.dat file is loaded into the Windows registry when a user logs into their account, and it is used by the operating system to apply the user's custom configurations and settings. Any changes made to a user's settings, preferences, or desktop layout are saved in the ntuser.dat file.

It is important to note that the ntuser.dat file is a system file and should not be modified or deleted manually unless you are experienced with working with the Windows registry. Making incorrect changes to the ntuser.dat file can cause issues with the user profile and could potentially prevent the user from logging into their account.

Overall, ntuser.dat is a critical system file that plays a key role in storing and applying user-specific settings in the Windows operating system.