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This is important to know because some programs in some circumstances, even tools available directly from Microsoft, don’t let you abbreviate the hive in registry paths. If you’re getting an error while using "HKLM," use the full path instead and see if that fixes it. The SAM subkey refers to information about Security Accounts Manager (SAM) databases for domains. Within each dplayx.dll database are group aliases, users, guest accounts, and administrator accounts, plus the name used to log in to the domain, cryptographic hashes of each user’s password, and more.


Windows 8 – Open the Start screen and type run, or find Run in the All Apps list. If you can’t open the Start menu, see the next section. One quick way you can open the Run dialog box in any of these Windows versions is to use the keyboard shortcut Win+R. In Windows 10 or Windows 8.1, right-click or tap-and-hold the Start button and then choose Run.

Press Windows+R to open the Run dialog box, type “regedit” in the text field, and then press Enter. Using Regedit can cause system instability, system crashes, or even a system failure requiring a re-install of the operating system if used incorrectly. You can also boot into "Safe Mode with Command Prompt" if you are having trouble opening the Command Prompt in Windows.

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  • Through the left hand navigation pane, navigate to HKEY_CURRENT_USER\Software\Microsoft\ Windows\ Current Version\Policies\System.
  • i had 4 of them when using RegistryBooster 2 which seems to be a legit program to clean your registry of invalid things.
  • You can run any app as an administrator as long as your Windows user account has administrator privileges.

The menu bar can be seen near the top of Figure 1. With the precautions out of the way, we can get down to learning about Regedit.

Prior to Windows 8.1, the Run dialog box is most easily available from the Apps screen. Although HKEY_LOCAL_MACHINE is often written as HKLM, it’s not really an "official" abbreviation.

Click here for instructions on booting into Safe Mode. You can also type this into the Start search feature. Windows 10 – Right-click on the Start button logo and select "Run". Windows 8.1 – Right-click the Start button and select "Run".

Local machine (HKLM) edits generally require a reboot. Current user edits (HKCU) generally require log off and on. Keep in mind that Regedit has no "undo" function. Regedit has some of the same menus that are so familiar throughout Windows.