We regret to inform you that Final Fantasy XI / PlayOnline will no longer support Windows XP in accordance with the following schedule.
Due to the fact that Microsoft(R) has already completed the support life cycle of this product, we have found that continuing support for this OS is a difficult proposition.
At the time support for this product ceases, the software you are currently using will continue to function and games will still be playable. We will also continue to perform regular updates of existing software. However, after the date when we discontinue support, we will as a general rule no longer be able to provide support for problems arising as a result of the operating system.
Furthermore, customer support for members utilizing this operating system will still be available through the Square Enix Support Center.
[Support End Date]
March 26th, 2013
[Affected Operating Systems]
Windows XP
Square Enix Support Center
http://support.na.square-enix.com/