To change the default settings, changes must be made under HKEY_LOCAL_MACHINE\Software\Classes. To change the settings for the interactive user, changes must be made under HKEY_CURRENT_USER\Software\Classes instead of under HKEY_CLASSES_ROOT. HKEY_CLASSES_ROOT also provides this merged view for programs that are designed for earlier versions of Windows. The HKEY_CLASSES_ROOT key provides a view of the registry that merges the information from these two sources. The HKEY_CURRENT_USER\Software\Classes key contains settings that override the default settings and apply only to the interactive user. The HKEY_LOCAL_MACHINE\Software\Classes key contains default settings that can apply to all users on the local computer.
#Windows file details editor windows#
Starting with Windows 2000, this information is stored under both the HKEY_LOCAL_MACHINE and HKEY_CURRENT_USER keys. This key is sometimes abbreviated as HKCR. The information that is stored here makes sure that the correct program opens when you open a file by using Windows Explorer. Is a subkey of HKEY_LOCAL_MACHINE\Software. This key is sometimes abbreviated as HKLM. HKEY_USERS is sometimes abbreviated as HKU.Ĭontains configuration information particular to the computer (for any user). HKEY_CURRENT_USER is a subkey of HKEY_USERS. This key is sometimes abbreviated as HKCU.Ĭontains all the actively loaded user profiles on the computer.
This information is associated with the user's profile. The user's folders, screen colors, and Control Panel settings are stored here. Folder/predefined keyĬontains the root of the configuration information for the user who is currently logged on. The maximum size of a key name is 255 characters. The following table lists the predefined keys that are used by the system. Security features in Windows let an administrator control access to registry keys. In Windows Millennium Edition, the registry files are named Classes.dat, User.dat, and System.dat. In Windows 98, the registry files are named User.dat and System.dat. System, System.alt, System.log, System.sav, Ntuser.dat,
System, System.alt, System.log, System.sav Also, the lack of an extension may sometimes indicate the type of data that they contain. The file name extensions of the files in these folders indicate the type of data that they contain. The supporting files for HKEY_CURRENT_USER are in the %SystemRoot%\Profiles\Username folder.
The supporting files for all hives except HKEY_CURRENT_USER are in the %SystemRoot%\System32\Config folder on Windows NT 4.0, Windows 2000, Windows XP, Windows Server 2003, and Windows Vista. A registry hive is a group of keys, subkeys, and values in the registry that has a set of supporting files that contain backups of its data.
Although the Registry is common to several Windows operating systems, there are some differences among them. ini files that are used in Windows 3.x and MS-DOS configuration files, such as the Autoexec.bat and Config.sys. The Registry replaces most of the text-based. The Registry contains information that Windows continually references during operation, such as profiles for each user, the applications installed on the computer and the types of documents that each can create, property sheet settings for folders and application icons, what hardware exists on the system, and the ports that are being used. The Microsoft Computer Dictionary, Fifth Edition, defines the registry as:Ī central hierarchical database used in Windows 98, Windows CE, Windows NT, and Windows 2000 used to store information that is necessary to configure the system for one or more users, applications, and hardware devices.
#Windows file details editor how to#
This article describes the Windows registry and provides information about how to edit and back up it.Īpplies to: Windows 10 - all editions, Windows Server 2012 R2 Original KB number: 256986 Description of the registry
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