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Have any updates or changes been made to the PC (mandatory and optional)? Could you try changing the compatibility mode? To change compatibility mode, right click on the exe file (Default location: C:\Program Files (x86)\SquareEnix\Final Fantasy XIV - A Realm Reborn\boot\ffxivboot.exe), right click it and select ‘Properties.’ Select the ‘Compatibility’ tab and select Windows 7.


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