After the Certificate Authority issues your SSL certificate, you must install it on your websiteβs hosting server. Hereβs how to install the certificate in DirectAdmin:
SSL installation on DirectAdmin
1) Navigate to your serverβs main menu by clicking the button at the top-left corner of the screen, as shown in the screenshot below. Choose ααΆααα·ααΆααααΆβααααβα’αααααααΎααααΆαα:

2) αα αααα»α α’ααααααααααααβααααΈ ααααα, α α»α αα·ααααΆαααααα SSL:

3) ααααΎαααΎα αα·αααααΆαααα·ααααΆαααααα αα·ααααααααΆααααααΎαααΆαα»α αααααΎα:

4) Then, paste the Private key for your SSL into the αααααΉα ααΆαα
α αααΆα (Note): The Private key is generated at the same time as the CSR code. The Private key is enclosed with the following header and footer: ββBEGIN PRIVATE KEYββ and ββEND PRIVATE KEYββ. If you generate the CSR code in DirectAdmin, you need to save the Private key manually as DirectAdmin does not save it automatically.

Paste the certificate code that you received from the Certificate Authority, including ββBEGIN CERTIFICATEββ and ββEND CERTIFICATEββ to the αα·βααααΆβααβααααα field. The same code is also contained in the yourdomain.crt file located in your 1Byte account. You can open this file with a plain text editor like Notepad (for Windows) or TextEdit (for macOS).

Once youβve pasted the key, tick the option Force SSL with https redirect. This enables HTTPS redirect for your website so that your visitors are automatically redirected to the secure version of the website. Then, click αααααΆαα»αβ (Save).

To complete the installation, upload the CA Bundle file (.ca-bundle) to DirectAdmin.
This file is in the certificate ZIP archive you received from the Certificate Authority via email. You can also download all SSL files from your 1Byte account. The CA Bundle file should have the name: yourdomain.ca-bundle.
You can open it via Notepad (Windows) or TextEdit (mac OS) to copy its content in the TXT format required for the DirectAdmin panel.
ααααΎαααΎαβαα·αααααΆαααα·ααααΆαααααα αα·ααααααααΆααααααΎαααΆαα»α"αααααΎαα αΎαα α»α ααΎ SSL CA Certificate.

Next, copy and paste the entire content of the .ca-bundle file to the box and tick Use a CA cert αααααΎαα αααααΆααααΈαααα α»α αααααΆαα»αβ (Save).

You will see the notification βSuccess CA certificate is ok. Your site should be secure within a few minutesβ. This means that the SSL was installed successfully. To check the certificate installation, you can use this online tool: https://decoder.link
Troubleshooting the βCould not Execute your requestβ error
From time to time, you may encounter the following error message when opening the αα·ααααΆαααααα SSL section in your Account Manager: βCould not Execute your request. SSL is not enabled for this ααααααααα αααααΆααααααΆ αα·α SSL option was turned on in the αα·ααααΆαααααα SSL section of your DirectAdmin. This option doesnβt allow SSL installation. It also prevents the user from opening the αα·ααααΆαααααα SSL section. As a result, when that option is enabled, you wonβt be able to install your certificate or turn the option off via the user management area.
It is only possible to disable that option via SSH. For this, youβll need to have root access via SSH to the server where your DirectAdmin is installed. Once logged in as a root user, run this command to open the configuration file for the domain:
sudo nano /usr/local/directadmin/data/users/α’αααβααααΎ/domains/DOMAIN.TLD.conf
- nano is the command to open the .txt file.
- ααΆααα·ααΆααααΆβααααβα’αααααααΎααααΆαα is the name of the account where you will apply the changes.
- DOMAIN.TLD is your domain name.
In the configuration file, locate the field ssl=OFF α αΎαααααΆααααααΌαααΆαα ssl=ON. αααααΆααααΈαααα α»α CTRL + O ααΎααααΈαααααΆαα»αααΆαααααΆααααααΌα αα·α CTRL + X to exit the file. This should fix the error.
ααααα·αααΎααΆα αα·ααααΆαααααα SSL section error persists, contact your hosting provider for further assistance.