Windows Service Pack Blocker is a tiny application from Microsoft that helps users to block installation of Service Pack updates through Windows Update service. It’s suitable, especially for organizations and corporate to prevent any possible issues as a result of automatic service pack installation, because such company can’t tolerate any issues associated with the OS update.
Windows Service Pack Blocker Tool Kit can be used with Windows 7 SP 1 and Windows Server 2008 R2 Service Pack 1 (valid for 12 months following general availability of the service pack)
This toolkit contains three components. All of them function primarily to set or clear a specific registry key that is used to detect and block download of Service Packs from Windows Update. You only need to use the component which best serves your organization’s computer management infrastructure.
Note; This toolkit will not prevent the installation of the service pack from CD/DVD, or from the stand-alone download package. This simply prevents the service pack from being delivered over Windows Update. Details and download available at this link.