Preliminary name Windows 2000 Millennium
Final name Windows Me (Millennium Edition)
Release to manufacturing June 19, 2000
Official release date September 14, 2000

Millennium, which would become Windows Millennium Edition (or Windows ME), remains one of the most controversial operating systems to date. Some of its downsides are frequently cited in criticisms like no real mode DOS support and almost completely ditching VxDs in favor of the then shaky WDM standard. At the same time, Windows ME's various quality of life improvements over 98 like USB mass storage device support, a leaner Explorer toolbar, and faster hardware detection dialogs often get overlooked.

Unlike Windows 95 and 98 which were widely used in both households and enterprise environments, this installment in the 9x family was specifically home-oriented. With this came several new software components useful for that market, including a heavily spiced up media player, a basic video editor, and several new games - things that its direct successor tends to get more credit for.

Still, Millennium takes a number of strange U-turns resulting from its desire to have a "diet DOS" kernel. Internally, the startup and shutdown routines are very different, real mode DOS drivers cannot be used at all, and, of course, DOS programs can only be run in protected mode windows. They do a pretty good job at it, but a lack of real mode support outside of an emergency boot disk is significantly limiting for those wanting to run legacy software exactly how they want to. On the plus side, this does mean a number of notorious bugs like con\con have no effect in Windows ME.

Earliest leaked build of Millennium, already implants MS-DOS 8.0 as an underlying operating system and merges some parts of Windows 2000 in itself
Earliest build confirmed to have some form of usable ACPI hibernation triggered by the operating system
Introduces the Help Center
2380, 2394
Bumps up Internet Explorer to version 5.5, was going to be called "Windows 2000 Millennium" at this point

This version of Windows has not yet been fully covered on this website, so more build pages will be added or updated whenever any of us get around to them. Thanks for dropping by!

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