Here are some best practices for managing license keys:
Leo checked the vSphere Client—the old fat client, not the web one, which had been clunky even a decade ago. A warning icon sat next to the host summary: Evaluation Mode. 60 days remaining. license key vmware esxi 5.5
There are a few ways to obtain a license key for VMware ESXi 5.5: Here are some best practices for managing license
I understand you're looking for a guide on VMware ESXi 5.5 license keys. However, I need to provide some important context first: not the web one