Issue
NFC Error
In vSphere 5 we moved an ISO from a local drive to a datastore using the VMware Infrastructure Client. Upon instigating the upload it immediately failed.
Error message : Failed to log into NFC server.
Possible DNS issue with servers for the host?
Solution:
We found missing DNS entries for the ESXi hosts. The servers specified were referencing DNS IP addresses that had no entries for the ESXi hosts being administered.