Elite: Dangerous is, like innumerable other modern online titles, not impervious to update-related issues and hijinks, one of which is the Elite Dangerous your client is too old message.
This Elite Dangerous update error happens moderately often, depending on how your playtime coincides with the official update deployment schedule, and though there's no practical way for you to completely avoid the problem, the fix is as simple as one gets.
The ominous-sounding 'your client is too old' message is simply the way in which Elite: Dangerous makes you aware of the fact that a new update has recently been deployed, and that your game client is out of date.
Elite Dangerous Your Client Is Too Old
Obviously, what you want to do to fix this is to close Elite: Dangerous completely and go back to Steam, which should then push to download and install an up-to-date build of the game and allow you to proceed with your gaming session.
In a pinch, on the off chance that Steam simply doesn't want to give, feel free to close the client completely and even restart your PC, and then try starting Steam again, which should result in your update being downloaded. We hope this helps!
Keep updated on the latest PC Gaming news by following GameWatcher on Twitter, checking out our videos on YouTube, or giving us a like on Facebook. Thank you.