Plesk Panel has a ini file which enables you to configure features and functions within Plesk Panel itself. If you have never had to edit panel.ini, then you will need to complete the following steps, as recommended by Plesk, to edit panel.ini safely:

1. Install the Panel.ini Editor from the Extensions menu in Plesk.
2. Open Panel.ini Editor at Extensions > My Extensions.
3. In Panel.ini Editor, switch to the Editor tab. If the editor is empty, do the following:
4. 3.1.Download the panel_ini.txt file.
5. 3.2. Open the downloaded file and copy its content.
6. 3.3. Paste the content into the editor.
7. Edit the content and click Save.