| RegUnLoadKey(IntPtr, String) | Unloads the specified registry key and its subkeys from the registry. Applications that back up or restore system state including system files and registry hives should use the Volume Shadow Copy service instead of the registry functions. |
| RegUnLoadKey(RegistryHive, String) | Unloads the specified registry key and its subkeys from the registry. Applications that back up or restore system state including system files and registry hives should use the Volume Shadow Copy service instead of the registry functions. |
| RegUnLoadKey(SafeRegistryHandle, String) | Unloads the specified registry key and its subkeys from the registry. Applications that back up or restore system state including system files and registry hives should use the Volume Shadow Copy service instead of the registry functions. |