Document:Windows Vista build 3790.1232 initial release notes

Build: Windows Server 2003 ".NET Server" (5.2.3790.1232 Professional Beta)

Compiled: 19th August 2004

This build is a pain in the neck. It should really be called 'Windows Server 2003 "We have no clue what this thing is called because Microsoft are lazy people and don't give proper names to a lot of their project reset builds" (5.2.3790.1232) (Professional Beta)'. This 3790.1232 can be considered a Windows Server 2003 Post-RTM but this particular build was built by the Winmain lab, odd for a server build. What really happened was the Winmain lab taking .NET Server 5.2.3790.1232 when Microsoft were resetting the Longhorn project and decided to toy around with it. You could call this pre-Longhorn Omega-13 if you really wanted, but there isn't really a name for this build, except for "Windows Pain in the neck". While the Longhorn EULA is in there, it isn't necessarily a Longhorn build. It was merely a test build for Microsoft to play with before they moved to Longhorn post-reset pre-beta.

Let's put this on a timeline to make it understandable.

Build 4094 declared a mess, Microsoft decide to reset the project While Microsoft decide to reset the project, it just so happens 5.2.3790.1232 happens to be the latest code Microsoft take it and tell the Winmain lab to compile it for the sole reason of playing with it Microsoft decide to use this as base and move on to begin Longhorn development

I bet you did not understand a word of that whatsoever. Basically, this build is what Longhorn is based on, but it is not strictly Longhorn. It's basically a Server 2003 RTM with SP1 Release Candidate slipstreamed and given a Professional client SKU. This means all the server goodies were removed.