With php 8.4.5 install Joomla through the web interface with error messages etc set to display error_reporting=E_ALL in your php.ini

On completion of the install you will see the following error messages.

Deprecated: Function xml_set_object() is deprecated since 8.4, provide a proper method callable to xml_set_*_handler() functions in D:\repos\j51\libraries\src\Updater\Adapter\CollectionAdapter.php on line 225

Deprecated: xml_set_element_handler(): Passing non-callable strings is deprecated since 8.4 in D:\repos\j51\libraries\src\Updater\Adapter\CollectionAdapter.php on line 226