 | This article may contain excessive or inappropriate references to self-published sources. (April 2023) |
| Version of the Windows NT operating system | |
 | |
 Neptune build 5111's desktop | |
| Developer | Microsoft |
|---|---|
| Working state | Historic, never released |
| Latest preview | 5.00.5111 (kernel reports) 5.50.5111 (version in many files) / December 27, 1999[1] |
| Marketing target | Consumer |
| Kernel type | Windows NT |
| License | Non-disclosure agreement[2] |
| Support status | |
| Cancelled | |
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[3] 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.[4]
- ^ Thurrott, Paul (October 6, 2010). "The Road to Gold: The development of Windows XP Reviewed". SuperSite for Windows. Penton Media. Retrieved August 12, 2014.
- ^ Cite error: The named reference
goldwas invoked but never defined (see the help page). - ^ "Neptune - the new Windows". ZDNet. July 5, 1999. Archived from the original on July 25, 2008. Retrieved January 7, 2010. Alt URL
- ^ "Platforms Group - Desktop Three-Year Outlook" (PDF). Microsoft Corporation. February 1998. Retrieved January 8, 2010.