Hi ,
The error you are referring seems to be irrelevant to the storage.
NPIV is ebaled on the switch.The Storage network must support NPIV (N-Port ID Virtualization).
I tried to look for the error and it points to HBA and the hyper V machine. This link might help http://www.yusufozturk.info/windows-server/hyper-v-vhba-virtual-port-creation-failed-with-a-npiv-error.html
Please let me know if you have any specfic error/issue pointing to MSA 2050 SAN.
Thanks