I am currently having the same issue. If i choose to run in border-less windowed mode I get no error. However in full screen mode I get this error. My system is up to date running Windows 10 with update drivers for my Nvidia GTX 1070. I have verified that DirectX is not corrupted. These errors seem to not effect me playing the game but only happen when logging out / closing FFXIV. I rather not play on DirectX 9 since there is better graphics when playing in DirectX 11. Also I rather not play in Border-less windowed mode too since that is not as efficient since it would need to worry about rendering explorer in the back. Please let me know if there is a fix for this issue that I can do or if there will be a fix for the game coming out.