When using cPanel, you may encounter an error message like "Sorry, the subdomain cannot be removed because it is linked to the addon domain(s)" when attempting to remove a subdomain. This error indicates that the subdomain is linked to one or more addon domains. In such a situation, certain steps need to be taken to remove the subdomain. Here are the steps to resolve this error:

Step 1: Identify Associated Addon Domains

Log in to cPanel and navigate to the "Addon Domains" section.
Check the listed addon domains to determine which addon domains are associated with the subdomain.

Step 2: Remove Addon Domains

To remove the identified addon domains, go to the "Addon Domains" section on the cPanel dashboard.
Click on the "Remove" link next to the relevant addon domain to remove it.

Step 3: Remove the Subdomain

After removing the addon domains, go to the "Subdomains" section on the cPanel dashboard to remove the subdomain.
Click on the "Remove" link next to the relevant subdomain to remove it.

Step 4: Alternative Solutions

If you do not wish to remove the subdomain, alternatively, you can update the subdomain as an addon domain.
After updating the subdomain as an addon domain, you can then proceed to delete it as desired.

Conclusion To resolve the "Sorry, the subdomain cannot be removed because it is linked to the addon domain(s)" error, it is important to first remove the addon domains associated with the subdomain. Then, you can proceed to remove the subdomain or update it as an addon domain. By following these steps, you can resolve this error in cPanel and proceed with your desired actions.

By following these steps, you can successfully remove the subdomain or update it as an addon domain. However, be careful during the process and ensure to back up any necessary data for security purposes.