The Extended Security Updates (ESU) License Preparation Packages (Extended Security Updates (ESU) Licensing Preparation Package for Windows 7 SP1 and Windows Server 2008 R2 SP1 and Extended Security Updates (ESU) Licensing Preparation Package for Windows Server 2008 SP2) address activation experience requirements that we identified while testing and evaluating by using a large population of preview customers. We introduced the ESU License Preparation Packages on February 11, 2020 to: