This has happened to me before, in which I had to wait multiple days for the issue to fix its self due to everything I tried not doing a single thing

I log in normally, I get to the character select screen, click my character, and go to the loading screen. There it shows the loading screen between 5 and 20 seconds, before I get a pop up saying....well here's a screenshot

http://prntscr.com/chs6jr

In the past I've reformatted my video drivers with a friend's help, I've even tried obscure things like 'having a steam game open when running XIV', I've switched to direct x 9 when I was using 11, I've reset my system settings for XIV (Which did nothing at all thanks, and yes I backed up that info before resetting), and a few other things which I no longer remember, and NOTHING WORKED AT ALL. This literally happens out of the blue, and I'm getting quite pissed off when I'm paying for a game I can NOT play.