This update is available from Windows Update. Before you apply this update, notice that this update has prerequisites. You can obtain this update by using one of the following methods. This update will help Microsoft and its partners deliver better system performance for customers who are seeking to install the latest Windows operating system. Telemetry is sent back to Microsoft for those computers that participate in the Windows Customer Experience Improvement Program (CEIP). This update performs diagnostics in Windows 7 Service Pack 1 (SP1) in order to determine whether performance issues may be encountered when the latest Windows operating system is installed.