A: While GitHub repositories (like "VMware-ESXi-License-Keys") exist, these are generally unsupported keys intended for educational purposes. Using unofficial keys violates the Broadcom EULA and provides no security or support guarantees. It is strongly recommended to obtain the official key from the Broadcom Support Portal.
If you currently hold an older, perpetual ESXi license key, it remains legally valid for that specific software version. However, you can no longer buy add-on perpetual keys, and active Support and Subscription (SnS) contracts for those keys cannot be renewed. To upgrade to newer versions (like future updates of vSphere 8 or vSphere 9), you must transition to the subscription model. 3. How to Apply and Fix License Key Errors in ESXi
Each of these results from distinct root causes; diagnosing needs to narrow which behavior matches your case.
$licenseDataManager.UpdateAssociatedLicenseData($hostContainer.Uid, $licenseData)
Install the ESXi ISO on your hardware.
Licenses purchased directly from hardware vendors (like Dell, HPE, or Lenovo) are often "fixed" to the specific asset tag or motherboard of that server. They cannot be legally or technically migrated to a server from a different vendor. How to Resolve and Apply an ESXi License Key
Imagine logging into your vSphere environment only to discover that mission-critical virtual machines refuse to power on, or that your ESXi host has mysteriously disconnected from vCenter Server. For many system administrators, these frightening scenarios trace back to a single culprit: an expired, invalid, or improperly applied license key.
If your 60-day evaluation has expired, you cannot use vCenter to migrate VMs. However, you can still apply a license key through the direct Host Client (Method 1 above) to restore functionality. B. "Invalid License Key"
VMware ESXi License Key Fixed: How to Solve Licensing Issues and Activate Free Versions
If you see the error "Cannot add the license key," it often indicates a version mismatch.
Duplicate/consumed license