Its build 3771, just like the Enterprise server that was released a few days ago, but it contains Standard and Web server as well. All In One releases are a convenient way for you to get a bunch of operating systems with minimal download, but in the past they have had their drawbacks. Namely the boot method that is used to make them. With all credit to the guys at bootscriptor.org who make a damn fine product, Bootscriptor still chokes on a few motherboards. And its not really their fault, its Motherboard manufacturers that don't fully implement booting standards. That being said, we're still sticking with boot scriptor. In a previous AIO we introduced the text or graphical cd boot method that lets people with incompatible bios boot to a text menu..