This happened once before. I've only seen one solution:
http://forum.square-enix.com/ffxiv/t...are-no-updates
This didn't work. I had to reinstall the game. It's happened again 2 days later.
I really don't want to download 22 GB of bandwidth again. Happens every time I hit Start once the launcher loads the game.
Someone said this might be related to the datacenter being full. Any truth to this?