Running ESXi 5.5 in 2026 is highly discouraged for production environments: End of Life : General support for vSphere 5.5 ended on September 19, 2018 Security Risks
| Option | Best for | Cost | |--------|----------|------| | | Modern hardware, security updates | Free (perpetual free license, up to 8 vCPUs per VM) | | VMUG Advantage | Lab / learning (full vCenter + ESXi) | ~$210/year | | Proxmox VE | Open-source, no license keys | Free | | XCP-ng | Enterprise-grade open-source | Free | esxi 5.5 license key github
You will almost never find a legitimate, unique, permanent ESXi 5.5 license key on GitHub. What you will find is risk. Running ESXi 5
: Previously, VMware provided free keys for the standalone hypervisor, but Broadcom ended the availability of the free ESXi version in February 2024. WordPress.com Security and Support Warning WordPress
Public repositories on GitHub often serve as unofficial archives for "unlimited" or "Enterprise Plus" keys for older VMware versions. Public Key Repositories : Repositories like hegdepavankumar/VMware-ESXi-License-Keys
: A common pitfall is attempting to use a vSphere 6.x key on an ESXi 5.5 host. Licensing is version-specific; a key for "vSphere 5 Enterprise Plus" will work on 5.5, but a "vSphere 6" key will not. How to Apply an ESXi 5.5 License Key
VMware may no longer offer the download for the ESXi 5.5 ISO, but the free license key is still often obtainable. Use the key with an existing installation ISO from a trusted archive.