We have a new documentation site for cPanel & WHM! You can find our new documentation site at docs.cpanel.net.

We will continue to maintain our API documentation on this server.

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For cPanel & WHM version 68


Where can I find information about how to obtain a license for cPanel & WHM?

To purchase a license, visit the cPanel Store.

Do I need a license before I install cPanel & WHM?

You may install cPanel & WHM without a license. However, it will not function until you obtain a license.

Free 15 day trial license

To determine whether you are eligible for a free 15 day trial license, perform the following steps:

  1. Enter your primary email address in the Trial License Interface and click Get Started. cPanel, Inc., will send you an email that contains your free trial license eligibility status.
  2. If you are eligible, you can install cPanel & WHM from this email.

How do I address this error: Content-type: text/plain The Cpanel Key Server said returned 500 Request Denied - No license entry found for your machine (X.X.X.X)! X-DES-KEY: generate error Invalid Lisc File?

This error indicates an issue with your cPanel & WHM license. To address this error, run the following command as the root user:


The /usr/local/cpanel/cpkeyclt script verifies your license. For more information, read our Installation Guide - Troubleshoot Your Installation documentation.

Can I install cPanel & WHM on Ubuntu?

Read our System Requirements documentation for supported operating systems. We cannot offer technical support for cPanel & WHM installations on other operating systems. Most likely, an installation on an unlisted operating system will not function properly.

How can I uninstall cPanel & WHM?

The best way to uninstall cPanel & WHM is to reformat your server.

Reinstall your operating system to return your server to a default setting if you do not wish to use cPanel & WHM.

How do I set up my cPanel server under a NAT configuration?

cPanel & WHM supports 1:1 NAT configurations. For more information, read our 1:1 NAT documentation.



cPanel & WHM only supports 1:1 NAT configurations.

Why do I have problems with X Windows / XFree86 after I install cPanel?


Do not run cPanel & WHM on a server with X Windows or XFree86.

cPanel, Inc. does not support X Windows or XFree86, due to severe security vulnerabilities. We cannot provide support to reclaim X Windows or Xfree86 on installed cPanel & WHM servers.


How do I access my new server?

You can use SSH to access your server remotely. If you use a Microsoft® Windows® system, you can use PuTTY to do this.


After you connect to your server, regardless of how you connect to it, you must run POSIX-standardized commands to manipulate files. For more information about POSIX, visit the POSIX page on Wikipedia.

Access your server via SSH from the command line

To access your server from the command line, perform the following steps:

  1. Use your preferred application to open the command line interface.
  2. Run the ssh root@$IP command (where $IP represents your target server's IP address).
  3. Enter your server's root password.

Access your server via SSH with PuTTY

To use PuTTY to access your server from a Windows PC, perform the following steps:

  1. Download and install the client from the PuTTY site.
  2. Open the client.
  3. In the Sessions menu, enter your server's IP address.


    Make certain that you select SSH.

  4. Click Open.
  5. Enter your server's root password.

Additional documentation

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