Notable Changes in Windows 7 and Windows Server 2008 R2 Service Pack 1

Setup prerequisites

• Your current operating system must be the Release to Manufacturing (RTM) version of Windows 7 or Windows Server 2008 R2 (build 7600).

• Users updating through Windows Update/WSUS must install the Servicing Stack Update (SSU) that handles the installation and removal of software updates, language packs, and optional Windows features. This update is necessary to successfully install or uninstall the service pack; it also improves the performance and reliability of the service pack installation. This update is part of the standalone update package and will be offered as a separate package on Windows Update.