Deactivate all plugins when not able to access the administrative menus in WordPress admin backend

Sometimes it may be necessary to deactivate all plugins, but you can’t access the administrative menus to do so. One of two methods are available to deactivate all plugins.

• Use phpMyAdmin to deactivate all plugins.
  -> In the table wp_options, under the option_name column (field) find the active_plugins row.
  -> Change the option_value field to: a:0:{}
• Or reset your plugins folder via FTP or the file manager provided in your host’s control panel.
  -> Via FTP or your host’s file manager, navigate to the wp-contents folder (directory)
  -> Rename the folder “plugins” to “plugins.old”
  -> Login to your WordPress administration menus (/wp-admin)
  -> Via FTP or your host’s file manager, rename “plugins.old” back to “plugins”