in general, Host Utilities include an installation program that sets the required Windows registry and HBA values.
like below is the host utilities 7.0 release note:
Windows Unified Host Utilities 7.0 includes support for E-Series and FlashRay storage systems, support for clustered Data ONTAP 8.2 or later versions, and enhanced iSCSI timeouts for faster failover.
https://library.netapp.com/ecmdocs/ECMP1656702/html/frameset.html
it shows you some known issues and limitations. check if there's any issue in your environment