What (CPU and server model) are you currently running?
He realized his mistake. ESXi 5.5 didn't just want the key; it wanted the
Use standalone migration agents to replicate workloads directly out of ESXi 5.5 and into modern cloud ecosystems, such as AWS, Microsoft Azure, or Google Cloud.
VMware vSphere 5.5 utilized a licensing model. Unlike modern subscription-based SaaS models, ESXi 5.5 keys were perpetual licenses based on physical hardware capacities.
The appropriate pathway is upgrading to ESXi 7.0 or 8.0, where license keys are assigned through the vSphere Client.
VMware ESXi 5.5 is a bare-metal hypervisor that installs directly onto physical servers. It abstracts CPU, memory, storage, and networking resources into isolated virtual machines (VMs).