diff --git a/administrator/components/com_installer/src/Model/UpdateModel.php b/administrator/components/com_installer/src/Model/UpdateModel.php
index 78d0560fefb..405b1255bbc 100644
--- a/administrator/components/com_installer/src/Model/UpdateModel.php
+++ b/administrator/components/com_installer/src/Model/UpdateModel.php
@@ -23,6 +23,7 @@
 use Joomla\CMS\Plugin\PluginHelper;
 use Joomla\CMS\Updater\Update;
 use Joomla\CMS\Updater\Updater;
+use Joomla\Database\DatabaseDriver;
 use Joomla\Database\DatabaseQuery;
 use Joomla\Database\Exception\ExecutionFailureException;
 use Joomla\Database\ParameterType;
@@ -361,7 +362,26 @@ public function update($uids, $minimumStability = Updater::STABILITY_STABLE)
 				continue;
 			}
 
-			$update->loadFromXml($instance->detailsurl, $minimumStability);
+			$app = Factory::getApplication();
+			$db = Factory::getContainer()->get(DatabaseDriver::class);
+			$query = $db->getQuery(true)
+				->select('type')
+				->from('#__update_sites')
+				->where($db->quoteName('id') . ' = :id')
+				->bind(':id', $instance->update_site_id, ParameterType::INTEGER);
+			$db->setQuery($query);
+			$updateSiteType = (string) $db->loadObject();
+
+			if ($updateSiteType == 'tuf')
+			{
+				$app->enqueueMessage(Text::_('JLIB_INSTALLER_TUF_NOT_AVAILABLE'), 'error');
+
+				return;
+			}
+			else
+			{
+				$update->loadFromXml($instance->detailsurl, $minimumStability);
+			}
 
 			// Find and use extra_query from update_site if available
 			$updateSiteInstance = new \Joomla\CMS\Table\UpdateSite($this->getDatabase());
diff --git a/administrator/language/en-GB/lib_joomla.ini b/administrator/language/en-GB/lib_joomla.ini
index 178145886bc..450de241eae 100644
--- a/administrator/language/en-GB/lib_joomla.ini
+++ b/administrator/language/en-GB/lib_joomla.ini
@@ -659,6 +659,7 @@ JLIB_INSTALLER_UNINSTALL="Uninstall"
 JLIB_INSTALLER_UPDATE="Update"
 JLIB_INSTALLER_UPDATE_LOG_QUERY="Ran query from file %1$s. Query text: %2$s."
 JLIB_INSTALLER_WARNING_UNABLE_TO_INSTALL_CONTENT_LANGUAGE="Unable to create a content language for %s language: %s"
+JLIB_INSTALLER_TUF_NOT_AVAILABLE="TUF is not available for extensions yet."
 
 JLIB_JS_AJAX_ERROR_CONNECTION_ABORT="A connection abort has occurred while fetching the JSON data."
 JLIB_JS_AJAX_ERROR_NO_CONTENT="No content was returned."