How to install Let’s Encrypt SSL in Plesk Server?
Step1. Login to the Plesk server with the admin account. Go to SSL/TLS Certificates under “Websites & Domains”.
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Step2. Click “Install” in the following image.
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Step3. Checkmark the common name that you want to install Let’s Encrypt and Click “Get it free“
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Step4. After waiting for a moment, the Let’s Encrypt SSL was activated.
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Step5. You can check your website certificate also.
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Thank you!!!