Install an SSL Certificate

Use the following information on this page to install your SSL Certificate. Trustico® SSL Certificates work with any server, device, hosting account or application that supports the use of an SSL Certificate.

What You Need To Install Your SSL Certificate

A complete SSL Certificate installation requires three components to function correctly :

• SSL Certificate
• Intermediate Certificate(s)
• Private Key

All three components must be present and correctly configured for your SSL Certificate to work properly.

Your SSL Certificate file is provided by Trustico® after your order has been validated and issued. This file contains your unique SSL Certificate and is typically delivered via e-mail or made available for download in the tracking system. Explore Trustico® Tracking System 🔗

The Intermediate Certificate(s) establish the chain of trust between your SSL Certificate and the trusted Root Certificate installed in web browsers and devices. Without the correct Intermediate Certificate(s), visitors may encounter security warnings or connection errors. Discover Intermediate Certificate Information 🔗

Your Private Key was generated at the time you created your Certificate Signing Request (CSR) and must be kept secure on your server. The Private Key must match the SSL Certificate exactly, as they form a cryptographic pair. Learn About Certificate Signing Request (CSR) Generation 🔗

SSL Certificate Installation Instructions

The following links will take you to the SSL Certificate installation instructions for various servers and control panels. The documentation is provided by our partners and will open in a new window when clicked.

SSL Certificates can be used in a variety of applications. If your server is not listed above, refer to your server documentation or contact your hosting provider for specific installation instructions.

Intermediate Certificates for Trustico® branded SSL Certificates issued after 24 May 2025 are available for download. Discover Trustico® Intermediate Certificates 🔗

Trustico® SSL Certificate Tools

Trustico® provides a suite of free online tools to assist with SSL Certificate installation, verification and troubleshooting.

The Chain Analyzer validates your complete Certificate chain and checks your website installation for any missing Intermediate Certificates or configuration problems that may cause browser warnings. Use this tool after installation to verify your SSL Certificate is correctly configured. Explore Trustico® Chain Analyzer 🔗

The PFX Converter combines your SSL Certificate, Intermediate Certificate(s) and Private Key into a single PKCS#12 (PFX) file, which is required for installation on Microsoft Windows servers and other platforms. Explore Trustico® PFX Converter 🔗

The Certificate and Private Key Matcher verifies that your SSL Certificate and Private Key form a valid cryptographic pair before installation. This helps prevent common installation errors caused by mismatched files. Explore Trustico® Certificate and Private Key Matcher 🔗

The Certificate Signing Request (CSR) Generator creates a new Certificate Signing Request (CSR) and Private Key pair for use when ordering or reissuing an SSL Certificate. Explore Trustico® Certificate Signing Request (CSR) Generator 🔗

About Installation Support

SSL Certificate installation is performed on your server or hosting environment and is the responsibility of the server administrator or hosting provider. Trustico® provides comprehensive online documentation, tools and resources to assist with the installation process, however dedicated installation support is not offered as standard due to the large variety of web servers, control panels and applications available.

If you require Trustico® to install your SSL Certificate on your behalf, the Premium Installation service is available as an additional purchase at the time of ordering. View Our Premium Installation Service 🔗

More Resources

Trustico® provides additional resources to help you with your SSL Certificate installation and configuration.

This document shows the current Sectigo® issuing Certificate Authority (CA) hierarchies, including cross-certificates. Sectigo® Certificate Authority (CA) Hierarchy 🔗

Trustico® SSL Certificates work with any device that supports the use of an SSL Certificate. If you are experiencing any problems with ubiquity, it may be due to the installation of an incorrect Intermediate Certificate or Root Certificate. Older devices may not work with all Intermediate Certificates, so ensure you install the most relevant Intermediate Certificates for your environment. Discover Intermediate Certificate Information 🔗