Today Microsoft announced the release of Windows XP Service Pack 3 (SP3) to Windows Update and Microsoft Download Center. We also resumed automatic distribution of Windows Vista SP1. We will begin automatically distributing Windows XP SP3 in early summer.As mentioned last week, we uncovered a compatibility issue between Microsoft Dynamics Retail Management System (RMS) and both Windows XP SP3 and Windows Vista Service Pack 1 (SP1). To help protect customers, we put filtering in place to prevent Windows Update from offering both service packs to systems running Microsoft Dynamics RMS. We are still testing a fix and are working to make it publicly available via Microsoft Download Center this month.Until then, we advise Microsoft Dynamics RMS customers to not install either service pack. Microsoft Dynamics RMS customers running Windows XP SP3 or Windows Vista SP1 should contact Microsoft Customer Support Services for additional information.
Downloads may vary from 67 MB to 600 MB of file size. A direct download link of size 316.4 MB from microsoft download centre for the stand alone english version of Windows XP SP3 is
The release had been delayed by a bug that affected users of Microsoft Dynamics Retail Management System, their point of sale solution. A hotfix is available for such users to apply prior to installing XP SP3.

