11. Must-use plugins
• Located in wp-content/mu-plugins directory
• They are always enabled
• You cannot disable them
• They are loaded before normal plugins (in
alphabetical order)
12. Must-use plugins
• It is necessary to use PHP files (or create a proxy
file which will load main file from the target plugin
directory)
• Enabled by uploading file, without having to log in
to the WordPress dashboard
• Activation hooks are not available
• They do not update