---
title: How do I install a purchased SSL certificate in DirectAdmin?
description: "If you have bought an SSL certificate from a certificate authority, you need to install it on your domain in DirectAdmin. This guide walks through adding the certificate, its key, and the CA bundle so your site is secured. ##…"
url: "https://disoh.com/fi/support/how-do-i-install-a-purchased-ssl-certificate-in-directadmin/"
updated: "2026-07-22"
category: Webhosting
---

# How do I install a purchased SSL certificate in DirectAdmin?

If you have bought an SSL certificate from a certificate authority, you need to install it on your domain in DirectAdmin. This guide walks through adding the certificate, its key, and the CA bundle so your site is secured.

## What you will need

- The issued **certificate** (often a .crt file or a block of text).
- The **private key** generated with your CSR.
- The **CA bundle** (intermediate certificates) from the provider.

## Installing the certificate

1. Log in to DirectAdmin.
2. Open your domain's **SSL Certificates** section.
3. Choose to **paste a certificate and key**.
4. Paste the certificate and the matching private key.
5. Add the CA bundle in the intermediate certificate field.
6. Save and enable SSL for the domain.

## After installing

- Visit your site with https and check for the padlock.
- Use an online SSL checker to confirm the chain is complete.
- Force HTTPS so all visitors use the secure version.

## The importance of the CA bundle

Leaving out the CA bundle is a common mistake that causes some browsers or devices to show a trust warning even though the certificate is valid. Always include the intermediate certificates your provider supplies.

## Troubleshooting

- **Key mismatch error:** the certificate and private key must be a matching pair from the same CSR.
- **Trust warning on some devices:** add or correct the CA bundle.

## Need help?

If your certificate will not install cleanly, our support team can help over live chat.