Windows XP build 2600

Build 2600 is the Release to Manufacturing build of Windows XP, released on 24 August 2001. PC manufacturers could sell PCs with XP pre-installed on 24 September 2001. The RTM build went to General Availability on 25 October 2001 with two main versions: Home Edition and Professional. It had kernel version 5.1 (2000 is 5.0 and Neptune is 5.50)