May of just fixed this by allowing a management connection over the CIFS data LIF.
net int modify -vserver SVM01-WH -lif SVM01_WH_CIFS01 -firewall-policy mgmt
net int modify -vserver SVM01-WH -lif SVM01_WH_CIFS02 -firewall-policy mgmt
Got the tip from here - https://library.netapp.com/ecmdocs/ECMP1196907/html/GUID-C8355A55-5063-4EF5-B0D2-91BC187681D5.html