Yesterday, Microsoft decided to release Windows XP SP3, as well as resuming the automatic distribution of Windows Vista SP1. According to Microsoft “Following last week’s discovery of a compatibility issue between both Windows XP SP3 and Windows Vista SP1 and Microsoft Dynamics RMS, Microsoft created and deployed a filter on Windows Update that will not offer either service packs to Microsoft Dynamics RMS customers. A fix for this issue is currently in testing at Microsoft and with customers and we hope to make it publicly available this month. Until then, Microsoft is advising 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.” I have installed XP SP3, and had absolutely no issues. The computer is running like a dream.