Windows 3.1 RC3b

Windows 3.1 RC3b is mentioned in an internal Microsoft document from February 1992. It 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 "RC3b" everywhere.

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

OLE DLLs - # 9072, Get hang on hour glass dropping large file onto write SUPERVGA.DRV - Bug# 14776, 800x600 supervga device frier LPtoDP bug PSCRIPT.DRV - Bug# 15006- Output notepad are printed using tiny font. SMARTDRV.EXE - APM Fix EPSON9.DRV - Bug# 14914, Epson LX-810: 17 cpi fonts not mapping correctly WINOA386.MOD - Bug# 15142, Error message dialog messed up USER.EXE - Bug# 12084 - screen saver fix SETUP.TPF - Change minimum space requirements for Windows. Added APPS.HLP, LSL.COM, IPIODI.COM Bug# 14875, Ingres W4GL.EXE and W4GLR.EXE require [Compat] Setting Change COPTWAITS Message WIN.SRC - Bug# 14875, see above APPS.HLP - New file WINDING.TTF - This is the font with drop out control turned off over 84 points, COMMDLG.DLL - Print Setup missing driver error GDI.EXE - BUG# 11539, GetKarningPairs sign extends returned chars Neg. Ext. Leading bug fix. .FOT - Change copyright messages
 * SETUP.EXE - Bug# 15107, a textual change in a help screen. Fix spelling error
 * WIN386.EXE - Bug# 14672, Get garbage reading floppies in dos box