Talk:Windows NT/Sandbox/Windows NT processor architecture table

Releases
''Note: NT 3.1 to 3.51 incorporate Program Manager and File Manager. NT 4.0 to 6.0 replace this with Windows Explorer (including a taskbar and Start menu)''.

The first release was given version number 3.1 to match the contemporary 16-bit Windows; magazines of that era claimed the number was also used to make that version seem more reliable than a '.0' release. There were also some issues related to Novell IPX protocol licensing, which was apparently limited to 3.1 versions of Windows software.

The NT version number is no longer used for marketing purposes, but is still used internally, and said to reflect the degree of changes to the core of the operating system. The build number is an internal figure used by Microsoft's developers and beta testers.