So the customer didn’t ever have a license server. It was a fresh install of vSphere 4 and vCenter 4. We wanted to add an existing ESX 3.5 server to vCenter to move the VM’s to the new vSphere cluster. I received this error:
“vi3 host cannot be added if vcenter is licensed but license server is not configured. configure license server and try again.”
Research will show –
According to http://www.vmware.com/pdf/vsp_4_legacy_host_lic.pdf, "vCenter Server 4.0 does not require a license server to manage ESX 4.0/ESXi 4.0 hosts. vCenter Server 4.0 requires a license server to manage ESX 3.x/ESXi 3.5 hosts. If you do not have a license server installed and you need one, download the VMware License Server from the VMware Web site."
I haven’t found a separate download for the license server, but I did discover its on the vCenter CD.
Look in the vpx folder for VMware-licenseserver.exe on the vCenter 4.0 cd.
Hope it saves some search and download time.
Hope it helps