How to Renew or Install an SSL Certificate in Plesk? IntroductionSSL certificates are essential for securing websites, protecting user data, and improving search engine trust. In Plesk, managing SSL certificates is straightforward and can be done using the built-in Let’s Encrypt integration or by installing certificates from third-party providers.This knowledge base article explains how to install, renew, and assign SSL certificates in Plesk, ensuring your website remains secure and accessible over HTTPS. 1. Log in to Plesk Log in to your Plesk Control Panel using your username and password. 2. Go to Websites & DomainsIn the left menu, click Websites & Domains. 3. Install a Free Let’s Encrypt SSL Certificate Locate and click the SSL/TLS Certificates button in the additional options. Plesk includes a free SSL option using Let’s Encrypt.To install or renew it: Click Install or Renew if a certificate already exists. Find the domain you want to secure and click SSL/TLS Certificates. Select the services you want to secure (website, mail, webmail). 4.Click Get it free or Install.Plesk will automatically issue and install the certificate. 5. Upload a Custom SSL Certificate (Optional) If you purchased an SSL certificate elsewhere:Click Add SSL/TLS Certificate.Enter a certificate name.Upload the .crt file and private key (.key).Click Upload Certificate.Return to Hosting Settings, select your uploaded certificate, and click Apply. 6. Verify Your SSL InstallationVisit your site using https:// (e.g., https://yourdomain.com).If you see a padlock icon in the browser, your SSL certificate is active and working. NotesLet’s Encrypt SSL certificates are free and renew automatically, but require valid DNS and open ports.Always ensure the domain points to the correct server IP before installing SSL.When renewing paid SSL certificates, the CSR and private key must match.After installing SSL, remember to assign it in Hosting Settings.Mixed content warnings occur if some website resources still load over HTTP. ConclusionKeeping your SSL certificate up to date is critical for website security, user trust, and SEO performance. Whether you use Let’s Encrypt or a paid SSL provider, Plesk offers flexible tools to install and renew certificates with minimal effort.By following the steps in this guide, you can ensure your website stays protected, compliant, and accessible via HTTPS at all times. Need Help?If you face issues accessing Plesk or forgot your credentials, contact our support team: Email: support@bigcloudy.com Submit a support ticket FAQ How often does Let’s Encrypt SSL renew in Plesk?Let’s Encrypt certificates renew automatically every 60 days, as long as DNS and web access are correctly configured Do I need to reinstall SSL after renewal?No. For Let’s Encrypt, renewal is automatic. For paid SSL certificates, you must upload the renewed certificate files and replace the old ones. Why does my site still show “Not Secure” after installing SSL?This usually happens due to: SSL not assigned in Hosting Settings Mixed content (HTTP resources on HTTPS pages) Browser cache issues Can I use one SSL certificate for multiple domains?Yes, if the certificate is a Wildcard or Multi-Domain (SAN) certificate and all domains are added during CSR generation.
