Some files in this build include symbols in the executable overlay data: ARP.EXE, DBUGIT.DLL, DBUGIT32.DLL, EXTRACT.EXE, INDICDLL.DLL, OLEAUT32.DLL, PLUSPACK\AWSEC32.DLL, PLUSPACK\ISOPRO32.EXE, PLUSPACK\SCCVIEW.DLL, ROUTE.EXE, TELNET.EXE, WINBEZMT.EXE
The symbols for WINBEZMT.EXE includes an infoleak including part of d:\dev\inc\winnt.h that had already been ran through the preprocessor.
Additionally, the compiler output .MAP file for NETDI.DLL was included.
This is the earliest available build to remove the arrow on the right side of the Start button.
The Taskbar now defaults to the bottom of the screen, much like build 81 and earlier.
The "New" menu in the right-click menu removes most of the options; only a video clip, MIDI sequence, GIF file, wave sound, text document, and WordPad documents can be made. "Link" is also renamed to "Shortcut".
The user can now align icons to a grid via the right-click menu.
A prototype about box for Windows Explorer can be opened, but it results in the older dialog without information on the build number, user name, and organization.
Help Topics has the Display button renamed to Open. In addition, there are new topics included in the build and some existing ones have been renamed.
The Ctrl+Esc keystroke has been implemented to open the Start menu.
The font for the file copy dialog has been changed from Arial to Microsoft Sans Serif.
This build contains an early file protection that detects various system files for integrity. If they are found to be incorrectly updated or missing, Windows can be able to either replace the original files or keep the current versions as proper.
Build 99 new menu on the right-click menu
Build 90c new menu on the right-click menu in comparison
Most legacy apps from Windows for Workgroups 3.11 have been removed in this build. The removed applications include Cardfile, Clock (only the 32-bit version; the 16-bit version can still be run via CLOCK.EXE), Notepad (only 32-bit version; 16-bit version can be run via NOTEPAD.EXE), Terminal, and Solitaire.
MAPI Spooler has been removed.
Some applications are moved to the System Tools folder, such as the System Monitor and Administration Configuration Tool. The Administration Configuration Tool, Disk Defragmenter, and System Monitor has gained new icons as well.
WinPad has been updated to version 1.3705.
WritePad has been renamed to WordPad and has gained a new icon and some changes in the toolbar icons. Upon loading WordPad, it will prompt the user to choose to create a blank formatted document or a non-formatted text file.
WRITE.EXE has been changed to link to WordPad instead.
System Properties now shows the processor type, although anything newer than 486 will be displayed as "80486 & 80x87".
Two legacy applets have been removed, which are Fonts and Network Setup.
The Disks applet has been removed in favor of the disk properties when right-clicking a disk on My Computer.
Network Setup has been completely overhauled and merged with the Network applet.
The Microsoft Windows logo in System Properties is present again.
The Animation tab on the Mouse applet, which was a placeholder in the previoustwo builds, has been removed.
Date and Time applet has a Time Zone tab so the user can select the timezone. Unlike in the RTM, the map is not interactable.
The Display Settings can allow the saving of theme files and relocated the scheme selector to below the display. Alongside, Screen Saver previews are now seen when a screensaver is selected in the applet.
The Virtual Memory slider in the System Properties has been removed.
Mixer Controls can now load properly without crashing. Alongside, the Multimedia applet can now open without causing a CAB32.EXE crash.
The default installation directory is now "WINDOWS" again instead of "CHICAGO".
Some text for the welcome headers had been enlarged and in a different font.
Due to the updates to the Network applet, the Network settings can now be open during setup to allow the user to configure network card settings before starting setup.
Advanced Settings now allow the user to utilize a Windows 3.1 compatibility mode (disable long filename support) and forcing 32-bit drivers (removing 16-bit drivers from AUTOEXEC.BAT and CONFIG.SYS to allow faster system performance)
The "Emergency Boot Disk" has been renamed to "Startup Disk". However, it still prompts the user to label a floppy disk with "Windows 4.0 Emergency Boot Disk".
This build will not boot on processors newer than the 80486.
Various video cards (such as S3 86c928, Tseng w32, and XGA) cannot use 800x600 at true color or 1024x768 with 65536 colors and Windows will complain about insufficient video memory even if the video card has 2MB of video memory or more. ATI Mach32 is not affected.