VMware ESXi 6.X
VMware ESXi 7.x
VMware ESXi 8.x
To resolve the issue, ensure no invalid characters are present in the host profile user defined name for iSCSI adapter.
If name is validated and error persists, change the iSCSI initiator name (WWN) from the command line:
esxcli iscsi adapter set -n <insertNewIQNname> -A vmhbaxx
Where vmhbaxx is the name of the adapter for which you want to change the name.
For Example:
esxcli iscsi adapter set -n iqn.1998-01.com.vmware:esxi02-468fd415 -A vmhba64
To list adapters (and find which one is software iSCSI) on the host, run this command:
esxcli storage core adapter list