"What is your config looking like, I think you have the one ESXi host on the DELL yes?" YES - 1
"You're connecting your vSphere client directly to the host or are you using vCenter?" client to ESXi. I have configured nothing beyond this point, as I can not create storage.
"Are there any proxy's in use?" NO
"Firewalls in between the host and the vSphere client?" W7 Firewall nothing out of the norm
" Double check if there's nothing causing connection issues." I connect and navigate fine through the rest of the ESXi area, just as soon as I try to create the storage, drops.
Anything in the log file, you see?
How is your host configured, can it use DNS alright? I can ping IPs, haven't tried domains.