Full error is The vSphere client could not connect to "x.x.x.x". You do not have permission to login to the server 'x.x.x.x."
This error just started happening this week. We're running ESX 5 and I've restarted the server a number of times. Both the domain admin and local accounts I've tried return the same error. All VMware services are running and I can RDP into the Vsphere server without issue.