Windows NT 3.1 build 475

Windows NT 3.10.475 is the June 1993 beta of Windows NT 3.1. It was uploaded to BetaArchive on 25 February 2017. Prior to its upload, it was mentioned in an internal Microsoft e-mail from August 1993 where it states that the build was delivered to Novell in June 1993 in order to test their NetWare Client for the then-upcoming NT operating system; the e-mail also states that Novell had received the April 1993 beta sometime earlier.

This build refers to itself in the boot screen and Winver as build 4755, and as build 475 on the default desktop wallpaper. It's possible that 4755 was intended to be 475.5. A similar observation can be found within the final build, 3.10.511.1, where the kernel's file version is 3.10.5098.1, perhaps meant to be 3.10.509.8.

On 5 April 2020, ReflectiaX shared a picture of the CD containing the Advanced Server version of this build.

New features and changes

 * It is the first known build to use 50 lines text mode for the text mode display during boot and the blue screen of death.
 * When booting this build, a message will appear for a short time to press the SPACEBAR to load the Last Known Good Configuration/Hardware Profile menu.

File differences
The following files have been introduced or removed compared to build 438: