Manually Update Customizations

We strongly recommend using Git™ to create customized versions of our default themes and templates and update them for new released changes.

If you use custom templates, you must check for template changes in each WHMCS version and apply them before updating WHMCS versions.

If you update without applying the necessary changes, some WHMCS features may cease functioning, display an error, appear poorly formatted, or not display. This may include features in the Client Area, shopping cart, or Admin Area.

If you purchased your custom template from a third-party vendor, check the corresponding WHMCS Marketplace listing for available updates and then contact the vendor to obtain them.

Manually Update Custom Templates

To update your custom templates before updating versions:

  1. Find the changes to the parent template in the Release Notes for your target version and any intermediary versions.
  2. Review all of the files against your custom template files in the templates/template_name directory, where template_name is your template’s name.
  3. For each change, remove the red - line and replace it with the green + line:
    Diff of changes to a template file.
  4. After you have applied all of the template updates, clear the template cache:
    1. Log in to the Admin Area.
    2. Go to Utilities > System > System Cleanup.
    3. Click Go under Empty Template Cache.
updates customization system-themes order-form-templates

Last modified: October 30, 2024