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Where is the Registry stored in Windows? I want to find the files shown when running regedit. If I have got the wrong end of the stick here, please rephrase your question and I will be happy to help. Each hive contains a Registry tree, which has a key that serves as the root i. Subkeys and their values reside beneath the root. The system creates and manages these hives entirely in memory; the hives are therefore temporary in nature. The system creates volatile hives every time the system boots.
Examples are:. These files are database files, and only RegEdit, Regedit32 and the Kernel32 can read them. Every Windows got a registry Key which lists every hive in system. Open Regedit and navigate to the following key to get a complete list:. If you're getting an error while using "HKLM," use the full path instead and see if that fixes it. Actively scan device characteristics for identification. Use precise geolocation data.
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Policies and guidelines Contact us. Add links. Also, the lack of an extension may sometimes indicate the type of data that they contain. In Windows 98, the registry files are named User. In Windows Millennium Edition, the registry files are named Classes. The following table lists the predefined keys that are used by the system. The maximum size of a key name is characters. Many of the bit keys have the same names as their bit counterparts, and vice versa.
For more information about how to view the registry on Bit versions of Windows, see How to view the system registry by using bit versions of Windows. The following table lists the data types that are currently defined and that are used by Windows. The maximum size of a value name is as follows:.
Long values more than 2, bytes must be stored as files with the file names stored in the registry. This helps the registry perform efficiently. The maximum size of a value is as follows:. Before you edit the registry, export the keys in the registry that you plan to edit, or back up the whole registry. If a problem occurs, you can then follow the steps in the Restore the registry section to restore the registry to its previous state. To back up the whole registry, use the Backup utility to back up the system state.
For more information about how to use the Backup utility to back up the system state, see the following articles:. Back up and restore your PC. How to use the backup feature to back up and restore data in Windows Server To modify registry data, a program must use the registry functions that are defined in Registry Functions. Administrators can modify the registry by using Registry Editor Regedit. We recommend that you use the Windows user interface to change your system settings instead of manually editing the registry.
However, editing the registry may sometimes be the best method to resolve a product issue. If the issue is documented in the Microsoft Knowledge Base, an article with step-by-step instructions to edit the registry for that issue will be available.
We recommend that you follow those instructions exactly.
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