Windows NT 3.1 build 438

Windows NT 3.1 build 438.1 is the April 1993 beta of Windows NT 3.1. It's not that different from build 404.1, which was released a month earlier. A version of the build in the Alpha AXP architecture was shared on 4 August 2020.

New features and changes

 * The Control Panel and Windows NT Setup icons are now updated to match the ones in Windows 3.1.
 * has been updated to version 3.1 as seen in the RTM.
 * When changing the display type in Setup, a warning message will appear, as selecting a display type incompatible with the current installed one will make Windows NT unusable, necessitating reinstallation. Setup recommends to select the proper display type after Windows NT has been fully installed, as the user still has access to the Last Known Good Configuration to recover the previous hardware state.

File differences
The following files have been introduced or removed compared to build 404: