This policy setting disables the Windows registry editors Regedit.exe and Regedt32.exe. If this setting is enabled and the user tries to start a registry editor, a message appears explaining that a setting prevents the action. To prevent users from using other administrative tools, use the "Run only specified Windows applications" setting. Fix: (1) GPO: User Configuration\Administrative Templates\System\Prevent access to registry editing tools (2) REG: HKEY_CURRNET_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System!DisableRegistryTools