Code CS2401 means the app store is currently unavailable
Please try accessing it again later.
In the meantime, turn the TV box off at the wall, check all the cables are firmly plugged in to the TV box, and then turn it back on.
If there's still a problem accessing the app store after that, let us know below.
This code only affects our Virgin TV 360 boxes, 360 Mini boxes, and Stream from Virgin Media.