How To disable file editing in WordPress admin?

1. Log into the cpanel.
2. Open File Manager under Files & Security.
3. Locate the file wp-config.php and check the box to select it.
4. Click Edit in the menu bar at the top of your screen.
5. Search wp-config for define(‘DISALLOW_FILE_EDIT’, it is usually located towards the bottom.
6. If you’ve found it, check it’s set to “true” (see below). If it’s not there, you need to add it to the bottom of the file, like this:

define('DISALLOW_FILE_EDIT', true);

Click Save at the top of your screen.

Tip: If you want to temporarily allow file editing, you can simply replace “true” with “false”. Change it back when you are done editing.