Install an SSL Certificate

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

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, click the relevant link below and it will open in a new window.

Apache, Mod SSL 🔗 Microsoft IIS 7.x  🔗
NGINX 🔗 Microsoft IIS 8.x  🔗
All Other Web Servers 🔗 Microsoft IIS 5.x & 6.x 🔗
Mozilla SSL Configuration Generator 🔗 Sectigo® SSL Installation Guides 🔗
Qualys SSL Server Test 🔗

SSL Certificates can be used in a variety of applications. If your server is not listed or you need additional information, refer to your server documentation or contact your server vendor.

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

About Installation Support

Due to the large amount of different web servers, control panels and uses for our products we do not offer dedicated installation support. However, feel free to Contact Us 🔗 via online e-mail or live chat and we'll attempt to help to the best of our abilities if you are experiencing a technical problem.

Visit our Premium Installation 🔗 page if you require us to install your SSL Certificate. Premium Installation is an additional service which must be purchased at the time of ordering.

More Resources

This document shows the new (in-use in 2024/2025) Sectigo® issuing CAs and hierarchies, including cross-certificates. Sectigo® CA Hierarchy 🔗

Our 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 or root. Older devices may not work with all intermediates, ensure you install the most relevant intermediates for your environment. Intermediate Certificate Information 🔗

Configure Your SSL Certificate Trust Seal

How GREASE from Google Protects the Future of Secure Connections and SSL Certificate Compatibility

How GREASE from Google Protects the Future of S...

By randomly injecting unknown values into Transport Layer Security (TLS) connections, GREASE ensures that servers and network devices properly handle new protocol features rather than rejecting them.

How GREASE from Google Protects the Future of S...

By randomly injecting unknown values into Transport Layer Security (TLS) connections, GREASE ensures that servers and network devices properly handle new protocol features rather than rejecting them.

Delegated Credentials : The New Standard for Securing SSL Certificate Private Keys at Scale

Delegated Credentials : The New Standard for Se...

Delegated Credentials provide an elegant solution to the private key distribution problem by separating the long-lived SSL Certificate from the short-lived credentials used to actually terminate Transport Layer Security (TLS)...

Delegated Credentials : The New Standard for Se...

Delegated Credentials provide an elegant solution to the private key distribution problem by separating the long-lived SSL Certificate from the short-lived credentials used to actually terminate Transport Layer Security (TLS)...

How Time Synchronization Affects SSL Certificate Validation : Why Incorrect Clocks Cause Certificate Errors

How Time Synchronization Affects SSL Certificat...

When a browser or application connects to a server over HTTPS, it compares these timestamps against the current system time to verify that the SSL Certificate is within its valid...

How Time Synchronization Affects SSL Certificat...

When a browser or application connects to a server over HTTPS, it compares these timestamps against the current system time to verify that the SSL Certificate is within its valid...

How DNSSEC Record Types Work Together to Validate Domain Name System (DNS) Responses

How DNSSEC Record Types Work Together to Valida...

Every time you visit a website, send an e-mail, or connect to an online service, your device relies on the Domain Name System (DNS) to find the correct destination. Without...

How DNSSEC Record Types Work Together to Valida...

Every time you visit a website, send an e-mail, or connect to an online service, your device relies on the Domain Name System (DNS) to find the correct destination. Without...

Split-Horizon DNS and SSL Certificate Validation : Why Your SSL Certificate Fails Despite Correct Installation

Split-Horizon DNS and SSL Certificate Validatio...

When you order an SSL Certificate, the Certificate Authority (CA) must verify that you control the domain for which you are requesting the SSL Certificate. This verification process uses several...

Split-Horizon DNS and SSL Certificate Validatio...

When you order an SSL Certificate, the Certificate Authority (CA) must verify that you control the domain for which you are requesting the SSL Certificate. This verification process uses several...

SSL Certificate Revocation Explained : What the End of OCSP Means for Website Security

SSL Certificate Revocation Explained : What the...

Without revocation mechanisms, a compromised or incorrectly issued SSL Certificate would remain trusted until it expires, creating significant security risks.

SSL Certificate Revocation Explained : What the...

Without revocation mechanisms, a compromised or incorrectly issued SSL Certificate would remain trusted until it expires, creating significant security risks.

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