Unverified50% confidenceFactExact time
Microsoft's original codename for the next-generation consumer Windows was Neptune, built on the NT kernel.
1
Sources
50%
Confidence
Long-term
Relevance
10/4/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedMicrosoft originally planned to release a system codenamed Neptune, built on the NT kernel and scheduled for March 2000, but it was cancelled because it could not be delivered on time.69% similarUnverifiedMicrosoft had been using the NT kernel in the enterprise market since Windows NT 3.1 (1993); Windows 2000 was the first NT-based product targeting enterprise desktops, and Windows XP was the first to bring the NT kernel to ordinary home users.68% similarUnverifiedThe Windows NT architecture is the core operating system architecture Microsoft began releasing in 1993, employing a microkernel and hybrid kernel design.61% similarUnverifiedThe full name of Windows Me is Windows Millennium Edition.52% similar
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