Follow the steps below:

1. In the Admin Console, choose Administration > SSL Settings.
2. On the SSL Settings page, scroll down to Install an SSL Certificate.
   • Under SSL Certificate, enter the file name of the certificate that you received from the certificate authority in response to the appliance-generated certificate signing request. The certificate must have a .pem file extension. If your certificate has a different file extension, such as .cer or .der, you must convert it into a .pem certificate first.
     Leave the SSL Private Key field blank.
3. Click View Certificate Information.
4. Installing the certificate restarts the appliance. If you are ready to install, click the Install SSL Certificate button.When the page refreshes, the following message appears at the top:
   SSL certificate installed. The appliance console needs to be restarted, please log in again.
5. On the Admin Console login page, click Log in, and log in using your username and password.
6. Choose Administration > SSL Settings. Your certificate information is listed under Current SSL Certificate Information.
7. Query the search appliance for secure content that requires HTTPS authentication. If you see a security message when you try to view the content, your certificate is not valid, or else it cannot be authenticated with the key that you installed. If you see the expected content and do not get any security messages, the certificate is correctly installed.