Windows XP build 2405

Windows XP build 2204 is a build of Windows XP. The build number is referenced in Windows XP's source code in. While the build number may suggest it is a build of Windows ME, rather than Windows XP, the reference is contained within the source code to the Windows NT debugger, and therefore can only reference a build of Windows XP.

event.cpp
if ((g_TargetBuildNumber > 2405)