How to install an SSL certificate from 3rd party certificate authorities for a domain in Plesk?

Question

How to install an SSL certificate from 3rd party certificate authorities for a domain in Plesk?

Answer

1. Open the certificate file (*.crt) with a text editor:

   The file should be divided into two parts, each starting and ending as follows:

   • The first one concerning the Private key (*.key):

     -----BEGIN RSA PRIVATE KEY-----
     ....
     -----END RSA PRIVATE KEY-----

   • The second one concerning the Certificate (*.crt or *.pem):

     -----BEGIN CERTIFICATE-----
     ....
     -----END CERTIFICATE-----

2. Open the CA certificate file (*-ca.crt) with a text editor:

   Note: The CA certificate file is generally included in the package when the certificate is purchased. If it's not, request it from its vendor.

   • There should be only one part, as follows

     -----BEGIN CERTIFICATE-----
     ....
     -----END CERTIFICATE-----

Each above-mentioned part should be added to Plesk, as follows:

3. Log into Plesk;

4. Go to Domains > example.com > SSL/TLS Certificates > scroll down to the More options section, then click on the Manage button under the Download or remove existing certificates:

   

   Note: If there is a certificate installed already on that domain, in SSL/TLS Certificates menu use the Advanced Settings button.

5. Click Add SSL/TLS Certificate > Scroll down to the Upload the certificate as text section;

6. Paste each section from the certificate file into the corresponding fields, as follows:
   

7. Click Upload Certificate;

8. Go to Domains > example.com > Hosting Settings

   • Enable the SSL support option;

   • On the Certificate option, select the certificate uploaded on the previous step.
     

9. Click OK