Enable Registry Editor:
The common message anyone could ever get is "Registry editor has been disabled by the administrator"Misuse of the registry can lead to problems resulting in the need to reinstall Vista. Unlike many other programs, there is no 'Undo' function in the registry. Any changes made take effect immediately and cannot be undone except by the same method. Proceed with caution.
To enable or disable do as it says:
This will allow you to enable Editing Tools or regedit.exe from running for all users on the computer. By default, regedit.exe is enabled.
Even if you disable access to registry editor, you can still use registry editor in silent mode by using the /s switch. For example, if you type regedit /s filename.reg at the command prompt, you can import the filename.reg registry file into the registry, even though the Prevent access to registry editing tools policy is enabled. In order to prevent this, make sure you select Yes for Disable regedit from running silently?
Location:
The Registry Editor EXE file is located at: C:\Windows\regedit.exe