After you paste in your certificate, the information about your domain, username and IP address may fill in automatically. If it doesn't enter that information into the fields. Be sure to use your cPanel username, not your WHM username.

The second large text box is for your private key. WHM may put this key in automatically for you, but if it doesn't, simply copy and paste the private key from the e-mail that you received after creating your CSR. Be sure to include the top and bottom dashed lines when you copy and paste.

For now, leave the last large text box blank. We will correct the intermediate certificates in the next step. Click "Do It" and your SSL certificate will be installed. However, you will receive errors if you stop now since the intermediate certificates are not installed.

To complete the installation, you will need the xroot.crt file from the ZIP file that was e-mailed to you when your certificate was issued. If you have misplaced it, don't worry - you can download it below:

Download the Trustwave intermediates here.

Save the xroot.crt file to a directory on your server, and be sure to note the directory path. Generally, you can find Apache's configuration file in /etc/httpd/conf/httpd.conf, but you may need to search for it. Sometimes the SSL configurations are in a file called ssl.conf.

Open the configuration file in a text editor and search for the virtual host. You can search by your server's address or IP address. Once you find the virtual host which matches your host, look for two lines that start with SSLCertificateFile and SSLCertificateKeyFile. Add (or adjust) a line right below those two that should read:

SSLCACertificateFile /path/xroot.crt

Save and close the configuration file.