If you're still having an issue even booting FINAL FANTASY XI on your Windows 8 environment we recommend the big 3 maintenance steps: Windows Update, DirectX Update and graphics card driver update from either AMD or Nvidia. If you cover all those bases and it's still giving you a headache go ahead and contact us via the Square Enix Support center so that we can look into it for you. The Support Center is actively gathering some of this information on the contacts we receive.