How To Remove License From Esxi Host

3 min read 26-03-2025

Removing a license from an ESXi host is a necessary step when decommissioning a server, migrating licenses, or troubleshooting licensing issues. This guide will walk you through the process, covering different scenarios and offering troubleshooting tips. Understanding how to efficiently manage your ESXi licenses is crucial for maintaining a well-organized and cost-effective virtual infrastructure.

Understanding ESXi Licensing

Before diving into the removal process, let's briefly review ESXi licensing. VMware ESXi utilizes licensing keys to unlock specific features and functionality. These licenses are typically tied to a specific host. Removing a license essentially disassociates the key from the host, making the license available for use elsewhere. This is different from simply uninstalling ESXi – removing the license deactivates features while keeping the ESXi installation in place, allowing for future re-licensing.

Types of ESXi Licenses:

Evaluation Licenses: These temporary licenses allow you to test ESXi features for a limited time. They automatically expire.
Per-Processor Licenses: These licenses are linked to the number of processors in the host.
Subscription Licenses: These provide ongoing support and access to updates.

Methods for Removing an ESXi License

There are primarily two ways to remove a license from your ESXi host: using the vSphere Client (for vCenter Server managed hosts) and directly through the ESXi shell (for standalone hosts).

Method 1: Removing a License using the vSphere Client

This is the recommended method if your ESXi host is managed by vCenter Server.

Log in to the vSphere Client: Access your vCenter Server and log in with appropriate credentials.
Select the ESXi Host: Navigate to the inventory and select the ESXi host from which you want to remove the license.
Access the Licensing Information: The exact location might vary slightly depending on your vSphere Client version, but generally, you'll find licensing information under the host's "Summary" or "Manage" tab. Look for options related to "Licensing" or "Licenses".
Remove the License: You should see an option to remove or detach the current license. Follow the on-screen instructions to complete the removal. This usually involves confirming the action.
Verification: After removing the license, check the host's licensing status to confirm it's successfully removed. The host should indicate that it's unlicensed.

Method 2: Removing a License using the ESXi Direct Console (for Standalone Hosts)

If your ESXi host is not managed by vCenter Server, you need to access the direct console:

Access the ESXi Host Console: Connect to the ESXi host's console, either locally or remotely via vSphere Client (even if not managed by vCenter, you might still have remote console access).
Open the ESXi Shell: Log in as root and open the ESXi shell. You might need to enable SSH access beforehand.
Use the esxcli Command: Use the command esxcli software license get to verify the current license status. Then, use the command esxcli software license remove --license-key <license_key> to remove the license. Replace <license_key> with your actual license key. Caution: Be absolutely sure of the license key before executing this command. Incorrect removal could lead to complications.
Reboot the Host: After removing the license, reboot the ESXi host to apply the changes.

Troubleshooting License Removal

License Key Errors: If you encounter errors during license removal, double-check the license key for typos.
Access Issues: Ensure you have the necessary permissions to manage licenses on the ESXi host.
Connectivity Problems: If using the vSphere Client, verify your network connectivity to the ESXi host and vCenter Server.
vCenter Server Issues: If using vCenter Server, ensure your vCenter Server is functioning correctly.

Best Practices for ESXi License Management

Regular Backups: Maintain backups of your license keys in a secure location.
Centralized Management: Use vCenter Server to manage licenses for easier administration and tracking.
Proper Documentation: Keep detailed records of your licenses, including keys and associated hosts.
License Compliance: Always comply with VMware's licensing terms and conditions.

By following these steps and best practices, you can effectively manage your ESXi licenses and ensure the smooth operation of your virtualized environment. Remember to always consult the official VMware documentation for the most up-to-date information and specific instructions for your version of ESXi.