Windows Neptune build 5048.1

Two files,  and   with the version number 5.50.5048.1 and the product name Microsoft(R) Neptune (TM) Operating System were found in Windows Me build 2358, but 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.