http://blogs.technet.com/emeasetup/archive/2009/04/20/how-to-remove-64-bit-wsus-3-0-sp1-installation.aspxWe should initially approach to uninstall WSUS 3.0 gracefully, but if it fails by any chance, we can follow the below mentioned steps to remove it manually. It will uninstall the WSUS completely. 1. Download the SDK to obtain MSIZAP.exe file. 2. Fromen-USCommunityServer 2.1 SP1 (Build: 61025.2)