Windows Me build 2460

Windows Me build 2460 is a pre-Beta 3 build of Windows Me. It includes updates to the Explorer interface and introduces the "Milennium Edition" branding in the start menu banner.

Neptune reference
A total of 8 files with the version number 5.50.5116.1 were found in this Millennium build, but it is unknown whether this Neptune build ever existed.

Some speculate this would've been a Milestone 2 build. It would've been compiled someday after 1999-12-11, meaning it would be one of the last Neptune builds before the Neptune project was canceled in 2000-01.