Release of XP Service Pack 3 was expected this week but put on hold due to a compatibility issue with one of Microsoft's retail application packages.
The company has found a glitch between Windows XP SP3, Windows Vista SP1 and the point-of-sale software, Microsoft Dynamics Retail Management System. The company said it plans to "put filtering in place to prevent Windows Update from offering both service packs to systems running Dynamics RMS.
Microsoft gave no time frame for when the issue would be resolved but said the fix is "in testing."
XP SP3 was released to manufacturing last week.