Final Fantasy XIV Has Stopped Working HELP!!!

[Lee-Sona]

what anti-virus and firewall do you have? as those might have updated and detected some part of FFXIV as a threat and locked it up or deleted it just checking the reacent history or logs in those programs will tell you, and have you attempted to end the process:
"C:\Program Files (x86)\SquareEnix\FINAL FANTASY XIV\ffxivconfig.exe 000017A8"
if not try that or try restarting the computer. if for some reason it is still unresponsive then a manual removal might be required.

[AnnabelleRose]

what anti-virus and firewall do you have? as those might have updated and detected some part of FFXIV as a threat and locked it up or deleted it just checking the reacent history or logs in those programs will tell you, and have you attempted to end the process:
"C:\Program Files (x86)\SquareEnix\FINAL FANTASY XIV\ffxivconfig.exe 000017A8"
if not try that or try restarting the computer. if for some reason it is still unresponsive then a manual removal might be required.

I did not have antivirus or firewall on when I tried to start up FFXIV. Believe me, the game worked fine for the first 2.5 months. I have not tried to end the process, yet.