How to end all active Facebook sessions at once
Over time, you might log onto Facebook using many different devices – and forget to sign out. This can grow to a pretty long list of office computers, your friends’ tablets, smartphones or other devices.
You can also remove individual devices or end active sessions with a mouse click – for example, if your account is accessed from a suspicious location. At the bottom right of the list, you’ll find a button that ends all active sessions.