Windows HUK MPIO No, installing HUK will not impact native MPIO. Windows Unified Host Utilities just includes an installation program that sets the required Windows registry and Host Bus Adapter (HBA)...Windows HUK MPIO No, installing HUK will not impact native MPIO. Windows Unified Host Utilities just includes an installation program that sets the required Windows registry and Host Bus Adapter (HBA) parameters so that a Windows host can correctly handle the storage system behaviors for NetApp ONTAP and E-Series platforms. When you install the Host Utilities software, the installer would set the required Windows registry and HBA parameters. Refer: Windows Host Utilities Kit Installation