A: No. The trial to permanent conversion is handled by contacting VMware (Broadcom) with a purchase order. Scripts cannot bypass the cryptographic signing of license files.
These exist on GitHub but are considered pirated or gray-market.
Several community-compiled keys have been floating around since 2015 that reportedly offer "Never Expire" functionality on older 5.5 builds:
For users whose primary goal is to run a free and secure virtualization platform, and who are not bound to the VMware ecosystem, several excellent alternatives exist. These options are all under active development and receive regular security updates, providing a safe environment for both home labs and production workloads. esxi 5.5 license key github
Before diving into the search for a key, it's crucial to understand that ESXi 5.5 is not "free" or "paid" software in the traditional sense. Instead, the software itself contains all the code for every feature. What differentiates a free host from a fully-featured enterprise cluster is simply the you apply. The same hypervisor binaries can be unlocked to become either the free vSphere Hypervisor or the enterprise-grade vSphere Standard, Enterprise, or Enterprise Plus editions.
Broadcom (which now owns VMware) actively monitors and enforces its copyright. The company regularly files DMCA takedown requests with GitHub to remove repositories containing "counterfeit license keys," which are "generated using illicit tools... to create keys that are accepted by the product. But these are not authentic keys nor were they paid for under a valid license to the product". These repositories are frequently removed, making them unreliable.
Finding a valid license key for VMware ESXi 5.5 can be challenging. Broadcom recently shifted VMware to subscription-based licensing. This change made older, perpetual licenses difficult to find through official channels. As a result, many users look to public repositories like GitHub for help. These exist on GitHub but are considered pirated
: Log in and navigate to the Configuration tab. Licensing : Select Licensing under the Software section.
Using a publicly hosted license key violates Broadcom’s (formerly VMware's) End User License Agreement (EULA). In a corporate environment, this can result in severe financial penalties during a software audit.
| Feature Category | Limitation with Free License | | :--- | :--- | | | Supports a maximum of 4 TB of RAM on the host (starting with ESXi 5.5). | | Virtual Machine | Each virtual machine is limited to a maximum of 8 vCPUs . | | Management | The free version cannot be managed by vCenter Server , requiring direct management via the legacy vSphere Client or host client on each individual host. This severely limits scalability. | | Backup APIs | The vStorage APIs for Data Protection (VADP) are not available, breaking compatibility with many enterprise backup solutions. | | Official Support | VMware/Broadcom provides no official technical support for free ESXi instances. | Before diving into the search for a key,
Leaked license keys are frequently blacklisted by software vendors. If a key is revoked, your management server may disconnect from the hosts, interrupting your monitoring, backups, and administrative capabilities. Safe and Legitimate Alternatives for Legacy Labs
Even though ESXi 5.5 is EOL, Broadcom’s legacy portal often still allows downloads for free keys. You need a Broadcom support account (formerly VMware Customer Connect). Search for "VMware vSphere Hypervisor (ESXi) 5.5 Free License."
You cannot upgrade directly from ESXi 5.5 to the latest versions (such as ESXi 8.0). You must follow a stepped upgrade sequence: Upgrade ESXi 5.5 to ESXi 6.0 or 6.5. Upgrade ESXi 6.5 to ESXi 7.0.
Suddenly, your license reverts to "Expired," and VMs power off.