Microsoft said there is a “compatibility issue” between the XP service pack and Microsoft Dynamics Retail Management System, a retail chain management program for small and midsize businesses.

Microsoft has finalized the code for release for SP3 last week and had planned to make it available starting April 29^th..

“In order to make sure customers have the best possible experience, we have decided to delay releasing Windows XP SP3 to Windows Update and Microsoft Download Center,” the company said in a statement.

The delay is expected to be a very short one; however it does add to the list of delays experienced as far back as 2006.