How Can I Deactivate All Plugins At Once

With FTP access or File Manager

  1. Rename /wp-content/plugins to /wp-content/plugins_temp
  2. Create the folder /wp-content/plugins

This way you will deactivate all the plugins without deleting them one by one from WordPress.

If you rename the folder /wp-content/plugins_temp back to /wp-content/plugins you will have all the plugins activated again.

Note! During this process, do not access the Plugins tab in WordPress to avoid detecting that the plugins are missing and deactivating them all.

Now, you can do even more:

Test Only One Plugin

If you want to test only a plugin, you can copy the plugin folder from /wp-content/plugins_temp in /wp-content/plugins folder after creating it.

  1. Rename /wp-content/plugins to /wp-content/plugins_temp
  2. Create the folder /wp-content/plugins
  3. Copy one plugin folder like /wp-content/plugins_temp/hide-my-wp to /wp-content/plugins/hide-my-wp

Now, after the test, remove the created folder and rename the temp folder back.