Нептун: Отменённая версия Windows

Codename for a version of Microsoft Windows under development in 1999

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Neptune was the codename for a version of Microsoft Windows under development in 1999. Based on Windows 2000, it was originally to replace the Windows 9x series and was scheduled to be the first home consumer oriented version of Windows built on Windows NT code. Internally, the project's name was capitalized as NepTune.

Neptune largely resembled Windows 2000, but some new features were introduced. Neptune included a logon screen similar to that later used in Windows XP. called Activity Centers, for task centered operations. Only one alpha build of Neptune, 5111, was released to testers under a non disclosure agreement, and later made its way to various beta collectors' sites and virtual museums in 2000. Other builds of Neptune are known to exist due to information in beta builds of Windows Me and Windows XP. In November 2015, a build 5111.6 disk was shown in a Microsoft Channel 9 video; version 5111 was the last build of Neptune that was sent to external testers, as the .1 or .6 after the build number stood for variant, not for compile. It is the only build of Neptune that made its way to the public. Build 5111 included Activity Centers a new task based user interface that featured individual "pages" focusing on daily tasks with facilities that include (but are not limited to) browsing the Internet, communication, document management and entertainment. User management was also improved in Neptune with the introduction of several new user types as well as a dedicated full screen user interface. The new interfaces were primarily implemented using Internet Explorer's web technology, often using the then new Mars framework. A key focus of the Neptune project was to experiment with user experiences that did not require manually saving previous work; some of this effort is visible in the only available build, which enables hibernation by default and requires the user to take extra steps to fully shut down the device. The Activity Centers could be installed by copying ACCORE. DLL from the installation disk to the hard drive and then running regsvr32 on ACCORE. DLL. The centers contained traces of Windows Me, then code named Millennium, but were broken due to JavaScript errors, missing links and executables to the Game, Photo, and Music Centers. In response, some Windows enthusiasts have spent years fixing Activity Centers in build 5111 close to what Microsoft intended. In early 2000, Microsoft merged the team working on Neptune with that developing Odyssey, the successor to Windows 2000 for business customers. The combined team worked on a new project codenamed Whistler, which was released at the end of 2001 as Windows XP. In the meantime, Microsoft released Windows Me in 2000 as their final 9x series installment. Triton was slated for a spring 2002 release (coinciding with Microsoft's final fiscal quarter of 2001). Triton was devised back in 1998 alongside Neptune; the only details of it within Microsoft's internal planning documentation that year relates to a deadline for added hardware support by December 2001. The project's codename refers to Neptune's largest moon, Triton.

The touch oriented Metro design language introduced as part of Windows 8, released in 2012, shared a large number of common goals with the Neptune project, including the unimplemented Activity Centers' focus on typography as well as dedicated full screen applications for common tasks. In addition, Windows 8 introduced hybrid boot, a functionality that takes advantage of hibernation to capture the initial states of necessary system applications and boot drivers, largely similar in principle to the Boot Accelerator feature that would have been included as part of Neptune.