Type your vCenter license key and optionally, provide a label for easy identification. Review your license key, then click Finish to add the new license. The new license now appears in the management panel, but we must still assign it to our newly installed vCenter Server. You simply renew, get new license keys, add them to vSphere, and then migrate your products over to the new keys. At that point you can purge the old keys. Trial Licenses. If you want completely free licensing, you’ll have to settle for 60 day trial licenses from VMware. I will admit that some of my licenses were granted to me directly from VMware to kick the tires with their products, such as VMware NSX, which was granted as part of my VCDX-NV efforts. If you already obtained a free key for ESXi 6.0 or 6.5 and you want to upgrade to 6.7, you can proceed to use the old key. All key are valid for vSphere 6.0, 6.5 and 6.7. Go to VMware vSphere Hypervisor (ESXi) 6.7 Download Page; Login or create an account; Register for ESXi (Enter some personal information) After registration, you will receive a unique license key and access to the binaries.