Windows Server 2008 R2 build 6608

Windows Server 2008 R2 build 6608 is the earliest known build of Windows Server 2008 R2. Only a single image from a blog of a Microsoft employee of the login screen has been shown. The original blogpost has since been deleted, but some of its contents were later archived by other sites.

Components from the x64 architecture were found on the Microsoft Symbol Server on 19 June 2022.

Changes

 * Changed the branding from "Windows Server 2008" to the codename for the OS, Windows Server 7.