As per Microsoft, support has ended for Windows XP as of 4/8/2014. 

As a result, Qxpress will not be able to support issues reported specific to this OS either.  We also will no longer support IE8 as of this date. If you have any Windows XP workstations or are using IE8, we strongly encourage you to upgrade them ASAP.

Please see the following link for further information

http://windows.microsoft.com/en-US/windows/end-support-help