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This article describes how to generate and renew Let’s Encrypt SSL certificates in Plesk.
Let’s Encrypt is a free, automated, and open certificate authority (CA) from the Internet Security Research Group (ISRG). It enables anyone to install a free, trusted SSL certificate on their website and benefit from the enhanced security an encrypted connection provides. Unlike a self-signed SSL certificate, which is also free and secure but not verified, a Let’s Encrypt certificate is recognized as fully verified, and displays the padlock icon in the address bar of modern web browsers.
Plesk provides a plugin that enables you to manage Let’s Encrypt SSL certificates.
To install a Let’s Encrypt SSL certificate on your domain, follow these steps:
The Let's Encrypt SSL Certificate page appears:
Select the Include www.example.com as an alternative domain name check box if you want the SSL certificate to protect your domain with and without the www prefix.
If installation fails, make sure that the domain name is valid. Check also that the domain:
If you have just created or added a domain to the server, also make sure that you have added the appropriate DNS records (at a minimum, an A record pointing to the server IP address), and allowed sufficient time for the DNS changes to propagate.
Plesk automatically renews Let's Encrypt certificates, with no action necessary on your part.
By default, Let’s Encrypt SSL certificates are valid for 90 days. However, Plesk automatically renews certificates once a month, as recommended by the Let’s Encrypt developers. The shorter renewal period helps ensure your site's security, and is completely transparent to you and your site’s visitors. Additionally, if a renewal attempt fails for any reason, you have sufficient time to troubleshoot the problem before the certificate expires.
If you need to renew a certificate manually for some reason, follow these steps:
For more information about Plesk, please visit https://www.plesk.com.
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