Topic summary
Windows Server 2003 Service Pack 1
Extracted from the Wikipedia article Windows Server 2003.
Development
Windows Server 2003's codebase was reused for the Development of Windows Vista under its codename, "Longhorn". Pre-reset builds of "Longhorn" were based on the Windows .NET Server Release Candidate 1 (3663) codebase, whereas post-reset builds of "Longhorn/Vista" after the development reset in 2004 are based on the works-in-progress Windows Server 2003 Service Pack 1 (3790.1232) codebase.