How to install a commercial certificate?

If you already have a purchased SSL certificate from any certification authority, you should install it as follows: 

1. It is necessary to convert the existing certificate file(s) using the private key with which CSR-query has been created. To do this, use the utility openssl, run the command in the console

where

• mysite.key - private domain key
• mysite.crt - SSL certificate in pem-format
• mysite-ca.crt - CA intermediate certificate in pem-format
• mysite.pfx - file to be created as a result of the command

To generate a PFX file from a certificate, you can also use an online service, for example:

https://www.sslshopper.com/ssl-converter.html

2. When the PFX file is created, upload it by clicking the "Upload Certificate" button in the site properties.

3. When downloading, specify the password for the PFX certificate that was specified when creating the PFX file.