Microsoft has postponed the planned April 29 release of Service Pack 3 for Windows XP because of a reported compatibility issue.
According to the Company, the issue stems from an incompatibility between the new Service Pack and Microsoft Dynamics Retail Management System or RMS. The same compatibility issue is also reportedly present with Microsoft Vista Service Pack 1.
RMS is a retail chain management solution that is made available to small and medium-sized customers. What Microsoft has done is to put in place a filtering system that will prevent the update from being downloaded in machines that carry RMS.
Reportedly, a fix is already available and is being tested before deployment.