Plesk component is missing from Tools & Settings or cannot be installed while license allows it: extension is not allowed for installation

Symptoms

• It is not possible to create a Presence Builder site, the Presence Builder icon is missing.

• Many elements are missing from Tools & Settings

• There is no Presence Builder icon, even for a domain that has a quick Presence Builder Edit Website button.

• There is a customizations.conf file that disables extension or component, for example, the Presence Builder section:

  # grep sitebuilder /usr/local/psa/admin/conf/customizations.conf
  {"ini":{"aps":{"serverAppsPromoEnabled":false},"promos":{"enabled":false,"cloudFlare":{"active":true},"commTouch":{"active":true},"googleIntegration":{"active":true},"helpDesk":{"active":true},"mobile":{"active":true},"sitebuilderTrial":{"active":true},"techDomain":{"active":true}},"google":{"tools":{"enabled":false}},"sitebuilder":{"enabled":false},"marketplace":
  ...

• Cannot install an extension, for example, Panel Migrator:

  PLESK_ERR: ERROR: Failed to install the extension 'Plesk Migrator' (package: panel-migrator):
  The extension panel-migrator is not allowed for installation.

Cause

Components is disabled in customizations.conf. For example, the file contains "sitebuilder":{"enabled":false} directive. This means the Presence Builder button is disabled for domains.

Resolution

1. Connect to the server via SSH or RDP.

2. Edit the file /usr/local/psa/admin/conf/customizations.conf and add or update the following string:

   CONFIG_TEXT: "sitebuilder":{"enabled":true}

   Note: In Plesk on Windows the path to the file is %plesk_dir%\admin\conf\customizations.conf .

Additional Information

In case this article helps, then note that such restrictions was applied from the license key used on the server. In order to clarify the purpose of such restrictions, get in contact with your service provider.

How to enable Web Presence Builder for all websites?