Quote Originally Posted by Naorij View Post
I had the same issue today. The solution was rather easy for me. My anti-virus program AVG put 3 files from the game folder of FFXIV into quarantine for unknown reason (ffxiv_dx11.exe and two other files). I just restored them and everything worked again after that. Hope this helps.
Same issue today, but I got the same issue as Naorij, I restored the files and now it's working.