Windows Neptune build 5048.1

Two files,  and , in Windows ME build 2358 have the version number 5.50.5048.1 and product name Microsoft(R) Neptune (TM) Operating System. It is unknown whether this Neptune build ever existed.

Such a build would likely be a part of Milestone 1 stage, and, based on the file dates, would be compiled before 1999-08-16.