Microsoft Windows Server Update Services 3.0 SP1 (WSUS 3.0 SP1) enables information technology administrators to deploy the latest Microsoft product updates to computers running Microsoft Windows Server 2003, Windows Server® 2008, Windows Vista®, Microsoft Windows XP with Service Pack 2, and Windows 2000 with Service Pack 4 operating systems. By using WSUS, administrators can fully manage the distribution of updates that are released through Microsoft Update to computers in their network