Windows 3.1 RC3a

Windows 3.1 RC3a is mentioned in an internal Microsoft document from 1992-02. This build is part of the Release Candidate stage and, like other RC builds, is not referred to by its actual build number, but is instead simply called "RC3a" everywhere.

According to the document, several third-party applications were tested on this build. Additionally, the following issues with this build were observed:

SYSTEM.DRV - Setup problem on DOS 3.1 - Bug #14863 EGAOEM.FON - change resolution to 72*96, font mapping problem for terminal font VGAOEM.FON - change resolution to 96*96, font mapping problem for terminal font WIN386.EXE - Bug #14413, invalid VxD dynamic link call ScreenSavers - Change font from HELV to MS SSERIF SMALL*.FON - mark as 3.0 compat DRIVERS.CPL - MMBug #6149, prompts to reboot if driver is already present GDI.EXE - WinProj 1.0 divide by zero trashes Windows KRNL286 and 386 - Bug #14975, DBWin crash w/output to COM1 at app exit; #14976, exit Windows after app exit, DBWin
 * .HLP - Recompiled with the new HC.EXE