Installing an SSL Certificate on Plesk Onyx

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Install SSL Certificate On Plesk Onyx

Get an SSL Certificate on Plesk Onyx: Complete Installation Guide

Upon activating an SSL Certificate and fulfilling validation requirements, the SSL certificate undergoes issuance and is subsequently dispatched to the designated administrative contact email address. 

In the forthcoming discussion, we will investigate installing an SSL Certificate on Plesk Onyx. Furthermore, valuable insights will be provided on selecting the optimal source for acquiring the finest SSL Certificate tailored for Plesk integration.

Digitally Sign & Encrypt Emails and Documents with Trusted S/MIME Certificates

Enabling a Secure HTTPS Connection

Ensuring a secure online experience is paramount, and enabling HTTPS connection is pivotal. Depending on your Plesk account type, the following instructions guide you seamlessly through the process.

  1. Service Provider View (Server Administrator and Reseller Accounts)
  • Navigate to the Domains section.
Domains Section
Domains Menu
  • Click on the domain name you intend to secure.
  1. Power User View (Customer Account)
  • Head to Websites & Domains.
Websites and Domains Section
  • Locate the relevant domain and click on it.
  1. Access SSL/TLS Certificates

Regardless of your account view, the next step is identical. Click on SSL/TLS Certificates.

Access SSL Certificates
  1. Select Your SSL Certificate
  • Locate the title of your SSL certificate for which you generated the CSR code.
  • Click on it to proceed.
  • The faded C (certificate) and A (CA certificate) icons indicate pending uploads of the SSL certificate file and CA bundle.
Upload Certificate Files
  1. Upload Certificate Files

On the subsequent page, you can upload both the SSL certificate file (.crt) and the CA certificate (.ca-bundle), both of which can be downloaded easily.

Upload Certificate As Text
  1. Alternatively, Upload in Text Format

If preferred, upload the SSL certificate and CA certificate in text format. Ensure no extraneous spaces exist in the CA certificate code.

  1. Confirm Successful Upload
  • Once uploaded, a success message will confirm the action.
  • The icons representing the certificate (C) and certificate authority (A) will brighten, indicating successful uploads.
Confirm SSL Upload
  1. Assign SSL Certificate

Proceed to assign the SSL certificate to your hosting services.

Assign SSL Certificate
  1. Select Your Certificate
  • Locate your SSL certificate from the drop-down list.
  • Confirm your selection by clicking OK.
Select Your SSL Certificate
  1. Completion and Success

The installation is acknowledged with a success message.

Installation Success Message

By following these straightforward steps, you’ll effortlessly enable an HTTPS connection, bolstering your website’s security and ensuring a safer browsing experience for your users.

Securing Plesk Login Page and Mail Services

Enhancing the security of your Plesk login page and mail services (SMTP, IMAP, POP3) is crucial in safeguarding sensitive data. Below is a detailed walkthrough to seamlessly achieve this.

Step 1: Access SSL/TLS Certificates

  • Log in as Administrator or an account with administrator privileges.
  • Navigate to Tools and Settings and select SSL/TLS Certificates.
Plesk Tools Settings

Step 2: Choose Secure Options

In the SSL/TLS certificates section, you’ll encounter two choices:

  • “Securing Plesk (login page).”
  • “Securing mail”
Plesk SSL Certificate Menu

Step 3: Select the Correct SSL Certificate

  • Opt for the appropriate SSL certificate that aligns with your security requirements.
  • Confirm your selection by clicking “OK.”
Select Correct SSL Certificate

Step 4: Successful Installation Confirmation

A successful installation will be indicated by a confirmation message.

SSL Installation Confirmation

Step 5: Check Plesk Login Page

Verify the secured login page by entering your domain name and port 8443 (e.g.,

Check Plesk Login Page

Securing Mail Services (SMTP, POP3, IMAP) with SSL Certificate

Steps 1-2: Repeat steps 1-2 from the previous part to secure mail services.

Step 3-4: Follow the SSL installation process outlined in steps 3-4 of the previous section for installing SSL for Mail Services.

How to Secure your Webmail Interface?

Step 1: Access SSL/TLS Certificates

  • For Service Provider view: Head to the “Domains” section, and select your domain (steps 1-2 from the first part).
  • For Websites & Domains view: Choose your domain (step 3 from the first part) and proceed to “SSL/TLS Certificates.”

Step 2: Secure Webmail

  • Pick the suitable SSL certificate and click on “Secure Webmail.”
  • Verify the successful notification.
Secure Webmail Tab

Step 3: Check Webmail Service

To ensure secure webmail access, use the webmail subdomain in this format:

You can fortify your Plesk login page, mail services, and webmail interface, guaranteeing the utmost protection for sensitive communications and data.

Creating a Certificate Signing Request (CSR) in Plesk

Generating a CSR is a crucial step in securing your website with SSL. The CSR is essential for SSL verification and validation. To generate a CSR, you have two options;

Option 1: Use a CSR Generator for Automated Creation

An efficient way to generate a CSR is by using a CSR Generator, which automates the process.

Option 2: Follow a Step-by-Step Tutorial

If you prefer a manual approach, follow these steps:

  1. Log in to Your Plesk Dashboard

Access your Plesk dashboard using your credentials.

  1. Choose the Domain

In the left pane, locate and select “Domains” (Plesk Onyx) or “Website and Domains” (Plesk 12). Identify the domain you want to secure.

  1. Access SSL/TLS Certificates

Navigate to the central menu and click on “SSL/TLS Certificates” (Plesk Onyx) or “Secure Your Sites” (Plesk 12).

  1. Add SSL/TLS Certificate

On the new page, click “Add SSL/TLS Certificate.”

  1. Provide Certificate Details

Enter the necessary parameters for your SSL certificate as per below:

  • Certificate Name: Assign a recognizable name for the certificate.
  • Bits: Select the encryption level (recommended: 2048).
  • Country: Choose your company’s country of origin from the drop-down list.
  • State or Province: Input the full state name where your business is legally located.
  • Location (City): Specify the city where your organization is registered.
  • Organization Name (Company): Use the legal company name for Business Validation or Extended Validation Certificates. For Domain Validation (DV), use your full name or website name.
  • Organization Department or Division Name: If unsure, use “IT” or “Web Administration.” For DV certificates, enter “NA.”
  • Domain Name: Provide your website’s Fully Qualified Domain Name (FQDN). Include an asterisk at the beginning for Wildcard certificates.
  • Email: Supply a valid email address for domain ownership verification.
  1. Verify and Submit

Review the provided information and click “Request” to proceed. Plesk will generate the CSR code and private key.

  1. Access Codes

To view the generated codes, locate your certificate name from the list of certificates. Click on the certificate name to access both codes.

  1. Copy the CSR Code

Copy the CSR code, including the “—–BEGIN CERTIFICATE REQUEST—–” and “—–END CERTIFICATE REQUEST—–” tags. This code will be required during the SSL order process.

By following these steps, you’ll successfully generate a CSR in Plesk and be ready to secure your website with SSL encryption.

Step-by-Step Guide: Installing an SSL Certificate on Plesk Onyx

To enhance the security of your website, installing an SSL Certificate on Plesk Onyx is essential. Here’s a comprehensive walkthrough to guide you through the process;

  1. Log into Your Plesk Account

   Begin by accessing your Plesk account using your credentials.

  1. Choose Domain and Access SSL/TLS Certificates

   Depending on your user role, follow these steps:

  • For Server Administrators and Resellers:

Navigate to the “Domains” section, select the desired domain, and click “SSL/TLS Certificates.”

  • For Default Customer Accounts:

Head to “Websites and Domains,” choose the relevant domain, and access “SSL/TLS Certificates.”

  1. Select SSL Certificate

Click on the SSL certificate name associated with the CSR code and private key you generated.

  1. Upload Certificate Files

On the subsequent page, you’re required to upload your certificate files. You have two options:

  • Upload the files directly.
  • Copy the contents of the files into the appropriate fields and upload them in text format.

Ensure you possess all essential files, including:

  • The SSL certificate (.crt)
  • The optional CA certificate (.ca-bundle) for compatibility with older browser versions
  • If you didn’t create the CSR in Plesk, you’d also need the private key (.key) file.

Once all files are ready, click “Upload Certificate.” A success message will confirm the installation.

  1. Configure Hosting Settings

From your domain’s central dashboard, select “Hosting Settings.”

  1. Choose SSL Certificate

Pick your recently uploaded SSL certificate in the “Certificate” drop-down list. Confirm your selection by clicking “OK.”

  1. Finalize SSL Configuration

   Look for another confirmation message indicating successful SSL configuration.

  1. Force HTTPS Connection (Optional)

   You may also follow these additional steps to ensure a secure connection,

  • Return to the previous step.
  • Check the “Permanent SEO-safe 301 Redirect” box.
  • Apply the changes and click “OK.”

Following these steps, you’ll seamlessly install an SSL Certificate on Plesk Onyx. 

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Janki Mehta

Janki Mehta

Janki Mehta is a Cyber-Security Enthusiast who constantly updates herself with new advancements in the Web/Cyber Security niche. Along with theoretical knowledge, she also implements her practical expertise in day-to-day tasks and helps others to protect themselves from threats.

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