We want to make sure that you know about the end of support for Windows XP which is coming on April 8, 2014.  For most people, the only immediate impact is that Microsoft will no longer release updates for the operating system. However, for retailers (especially in the United States) the impact can be higher. For example, because the PCI Security Standards Council does not consider systems that use out-of-lifecycle operating systems to be PCI compliant, retailers running Windows XP, regardless of their payment software, could encounter issues with their banks.

The better news is that, as soon as the operating system is upgraded, implementations of Microsoft Dynamics AX for Retail 2009 that were running on Windows XP remain PCI compliant. Please be aware that Microsoft Dynamics AX for Retail 2009 is supported on more recent operating systems, including Windows 8.1.

For more information about Windows XP end-of-support and upgrading to Windows 8.1, see this page:
http://windows.microsoft.com/en-us/windows/end-support-help