What file is ntuser.dat?

ntuser.dat is the user configuration file of the registry in the Windows operating system, which is a file that stores user information. This information includes the user’s custom themes and personalized modifications; do not delete ntuser.dat. Otherwise, your account will lose the personalized modifications and revert to the default settings.

#The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

What is ntuser.dat file?

NTUSER.DAT is the user configuration file of the registry in the Windows operating system.

ntuser.dat.LOG1 and ntuser.dat.LOG2 log files also belong to user configuration files, which are some records and configurations of system users. You should not delete them! You can’t delete it under the current user!

ntuser.dat is a file that stores user information, which includes the user's custom themes and personalized modifications, and the log of the file ntuser.dat.LOG.

Among these two files, do not delete ntuser.dat, otherwise your account will lose the personalized modifications and return to the default settings. ntuser.dat.LOG is generally used to check faults. This file is relatively large. If you do not need to check the computer yourself, you can delete it (it is useless for ordinary users), but it cannot be deleted directly. You can solve the problem by canceling the log record.

Related introduction:

The Windows operating system is composed of many files, and the registry is no exception.

Windows NT 3.1/Windows NT 3.5/Windows NT 3.51/Windows NT 4.0/Windows 2000/Windows XP/Windows Server 2003/Windows Vista/Windows Server 2008/Windows 7/Windows Server 2008 R2/Windows 8/ The registry of Windows Server 2012/Windows 8.1/Windows Server 2012 R2/Windows 10 and the future server version of Windows 10 - Windows Server 2016 and other operating systems includes multiple files, among which the user configuration files include Ntuser.dat, Ntuser.ini , Ntuser.dat.LOG log file, saved in the root directory "Documents and Settings folder under the subfolder named after each user name in the system," [where ntuser.dat in the win2000/xp/win2003 system is located in c :\document and settings\In the user name folder of the operating system you are currently logged in to, such as c:\document and settings\administrator\ntuser.dat, starting from the Windows Vista operating system, the path becomes C:\Users\ Administrator this path]. in the directory under the username. The system configuration file is located in "SYSTEM32=CONFIG" under the Windows system directory, including DEFAULT, SOFTWARE, SYSTEM, AppEvent.Evt, SecEvent.Evt, SysEvent.Evt and other hidden files and their corresponding .LOG (log) files and .SAV files.

The registry files in Windows NT/2000/XP/2003/vista/win2008/win7/win2008 r2 and other operating systems are in most cases stored in the %SystemRoots%\System32\Config folder (%SystemRoot % refers to the system root directory). These include Default, Sam, security, Software, System and files with the same name with log and sav extensions. The location of each computer user's user profile information (including Ntuser.dat and Ntuser.dat.log) is %SystemRoot%\profiles\Username in Windows NT. For example, the user's public Ntuser.dat file is stored in C: \winnt\profiles\public. Windows 2000 depends on whether it is a new installation or an upgrade installation from Windows 95/98 or Windows NT.

In the case of fresh installations and upgrade installations from Windows 95/98, the Ntuser.dat and Ntuser.dat.log files are stored in the %SystemDrive%\Documents and Settings\username folder.

In installations upgraded from Windows NT, the Ntuser.dat and Ntuser.dat.log files are stored in the %SystemRoot%\Profiles\username folder.

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