Windows NT 3.x NT 3.1 Pre-Release

WarpedMarioBros

What do I do about it though?

helloisthispizzahut

I tried to install build 404, 438, 340, 297, 239, and october 1991 builds but they don't seem to work.

jonirob

@helloisthispizzahut
Which emulator are you using?

helloisthispizzahut

I used virtualbox version 5

jonirob

@helloisthispizzahut
I have all these builds running well in 86Box, so 86Box could be your way to go.

hdfsyu123fromroblox

I think I have an ISO from September 1991

johnlennon364

Download link for Microsoft Windows NT 3.1 September 1991 ISO
https://archive.org/details/windows-nt-3.1-pdk-1.196-sept.-1991

lunarstudio

are there any surviving builds leaked with NT OS/2 branding?

thrsded2333

the early builds look similar to windows 3.0 (not 3.1) so i would call this Windows NT 3.0

xX420MCplayerXx

@lunarstudio
No, unless you wan't to count the April 1991 WOW Reversi Demo build's reliance on an OS/2 debugger.

thrsded2333

build 239 is flagged as a virus
Trojan:Script/Wacatac.B!ml

SomeGuy

It's a false positive. Modern virus scanners are crap. Report the problem to your antivirus provider.