For environments managed by vCenter, use the :
For administrators and enthusiasts, this was the "vmware esxi license key fixed" solution they had been waiting for—a return to a permanent, non-expiring license key for the hypervisor.
If your valid key fails to apply, it is often because your hardware core count exceeds what the license allows under the new rules. vmware esxi license key fixed
vim-cmd vimsvc/license --set="XXXXX-XXXXX-XXXXX-XXXXX-XXXXX" Use code with caution. Verify the license is applied by running: vim-cmd vimsvc/license --show Use code with caution. 4. Post-Acquisition Licensing Context (Broadcom Era)
: A major reason license keys "break" during assignment is the new requirement for a 16-core minimum per CPU and a 72-core minimum per license instance . Common Fixes for ESXi License Key Issues 1. Resolve "Insufficient Number of CPU Cores" For environments managed by vCenter, use the :
Connect-VIServer -Server <vCenter_IP> -User <username> -Password <password> $licenseDataManager = Get-LicenseDataManager
If you see the error "Cannot add the license key," it often indicates a version mismatch. Verify the license is applied by running: vim-cmd
instead of a direct 25-character license key. You must convert these through the Broadcom Support Portal before they will function in the ESXi UI. 2. The Death (and Rebirth) of the Free ESXi Key
This guide provides a comprehensive breakdown of how ESXi licensing works, how to apply a permanent license key, and how to resolve common activation errors. 1. How VMware ESXi Evaluation Mode Works
In response, Broadcom reversed its decision in April 2025 with the release of VMware ESXi . This new version re-introduces the free edition, now officially called VMware vSphere Hypervisor [1]. The most significant change is that the ISO image comes with the license key built-in, eliminating the need for manual entry in many cases. It is a permanent, non-expiring license intended for non-production use.