- The Registry Key Hkey_local_machine Software Microsoft Exchangeserver V15 Setup
- Hkey_classes_root
- Access To Registry Key Hkey_local_machine Software Is Denied
- Hkey Local Machine System
Where are the Windows registry files located in Windows 10. HKEYLOCALMACHINE SYSTEM. Every Windows got a registry Key which lists every hive in the system.
-->Definition
Contains the configuration data for the local machine. This field reads the Windows registry base key HKEY_LOCAL_MACHINE.
Field Value
Examples
The following example demonstrates how to retrieve the subkeys of this key, and prints their names to the screen. Use the OpenSubKey method to create an instance of the particular subkey of interest. You can then use other operations in RegistryKey to manipulate that key.
![Key Key](/uploads/1/2/4/8/124886032/936724517.png)
Remarks
LocalMachine
contains five keys:Hardware
Describes the physical hardware in the computer, the way device drivers use that hardware, and mappings and related data that link kernel-mode drivers with user-mode code. All data in this key is recreated each time the system is started. The Description subkey describes the actual computer hardware. The DeviceMap subkey contains miscellaneous data in formats specific to particular classes of drivers. The ResourceMap subkey describes which device drivers claim which hardware resources. The Windows NT Diagnostics program (Winmsdp.exe) can report on its contents in an easy-to-read form.
Describes the physical hardware in the computer, the way device drivers use that hardware, and mappings and related data that link kernel-mode drivers with user-mode code. All data in this key is recreated each time the system is started. The Description subkey describes the actual computer hardware. The DeviceMap subkey contains miscellaneous data in formats specific to particular classes of drivers. The ResourceMap subkey describes which device drivers claim which hardware resources. The Windows NT Diagnostics program (Winmsdp.exe) can report on its contents in an easy-to-read form.
SAM
The directory services database of security information for user and group accounts, and for the domains in Windows 2000 Server (SAM is the Security Account Manager, known as the directory services database).
The directory services database of security information for user and group accounts, and for the domains in Windows 2000 Server (SAM is the Security Account Manager, known as the directory services database).
![Hkey Hkey](/uploads/1/2/4/8/124886032/545866893.png)
Security
Contains the local security policy, such as specific user rights. This key is used only by the Windows 2000 security subsystem.
Contains the local security policy, such as specific user rights. This key is used only by the Windows 2000 security subsystem.
The Registry Key Hkey_local_machine Software Microsoft Exchangeserver V15 Setup
Software
The per-computer software database. This key contains data about software installed on the local computer, along with various items of miscellaneous configuration data.
The per-computer software database. This key contains data about software installed on the local computer, along with various items of miscellaneous configuration data.
System
Controls system startup, device driver loading, Windows 2000 services, and operating system behavior.
Controls system startup, device driver loading, Windows 2000 services, and operating system behavior.
By convention, if similar data exists under CurrentUser and under LocalMachine, the data in CurrentUser takes precedence. However, values in this key can also extend (rather than replace) data in Registry.LocalMachine. Also, some items (such as device driver loading entries) are meaningless if they occur outside of Registry.LocalMachine.
Hkey_classes_root
Applies to
-->Run and RunOnce registry keys cause programs to run each time that a user logs on. The data value for a key is a command line no longer than 260 characters. Register programs to run by adding entries of the form description-string=commandline. You can write multiple entries under a key. If more than one program is registered under any particular key, the order in which those programs run is indeterminate.
The Windows registry includes the following four keys:
- HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionRun
- HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionRun
- HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionRunOnce
- HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionRunOnce
By default, the value of a RunOnce key is deleted before the command line is run. You can prefix a RunOnce value name with an exclamation point (!) to defer deletion of the value until after the command runs. Without the exclamation point prefix, if the RunOnce operation fails the associated program will not be asked to run the next time you start the computer.
By default, these keys are ignored when the computer is started in Safe Mode. The value name of RunOnce keys can be prefixed with an asterisk (*) to force the program to run even in Safe mode.
Access To Registry Key Hkey_local_machine Software Is Denied
A program run from any of these keys should not write to the key during its execution because this will interfere with the execution of other programs registered under the key. Applications should use the RunOnce or RunOnceServices keys only for transient conditions, such as to complete application setup. An application must not continually recreate entries under RunOnce or RunOnceServices because this will interfere with Windows Setup.
Hkey Local Machine System
Run and RunOnce keys are run each time a new user logs in. RunServices and RunServicesOnce are run in the background when the logon dialog box first appears or at this stage of the boot process if there is no logon. These keys are for background services such as remote registry service and are run only once per boot. The Setup key is run only by Setup's first-boot activities, or after you use the Add/Remove Programs Wizard. This key displays the progress dialog box as the keys are run one at a time. For the Setup key, the name of the value is the name that is displayed in the dialog box.