Windows Longhorn/6.0.4020.0.idx02.030507-1155

Windows "Longhorn" build 4020 (with a build tag of 6.0.4020.0.idx02.030507-1155) is a Milestone 6 build of Windows "Longhorn", compiled on 7 May 2003. It is not to be confused with an older version of build 4020, compiled on 30 April 2003.