Expiration of Service Pack Blocker Tool for Windows Vista & Windows XP

January 29, 2009

I have some important information for those of you who have installed the Service Pack Blocker Tool for Windows XP or Windows Vista. The Service Pack Blocker Tool temporarily prevents the installation of a service pack through Windows Update, typically for one year after general availability of the service pack. We are announcing the upcoming expiration dates for the Service Pack Blocker Tool for Windows Vista SP1 and Windows XP SP3: Windows Vista SP1: April 28, 2009 Windows XP SP3: May 19, 2009 After April 28th, Windows Vista SP1 will be delivered via Windows Update. And after May 19th, Windows XP SP3 will also be delivered via Windows Update. For more information on the Service Pack Blocker Tool, please see this Q&A.