On the first boot, a printer setup and beta site tracker are opened. Program Manager items are converted for use in Chicago's new interface, as is ever so necessary for the large Windows 3.1x install base. The title bar says 'Welcome to Chicago Networking', but the instructions in the window still mention 'Windows for Workgroups'. The login window is very similar to the one found in Windows for Workgroups 3.11. Although it looks way different, it functions in the same way as the final splash screen, as it basically rotates through a color pallette to give an otherwise static image some form of animation. The Windows logo also flashes in various colors and positions. In contrast to the final release's bright, colorful, and cloudy splash screen, this one is mostly dark with a shimmering light in the middle of the logo. The network setup window is exactly the same as it is in Windows for Workgroups 3.11. Earlier DOS versions may work as well, but the last time I ran into an error with COMMAND.COM, it said it required DOS 7.0 or later. In order to get Chicago 58s to boot, I had to load some system files from the Windows 95 boot floppy and install Windows 3.11 on top of that. The computer I'm installing Chicago 58s on does use ATX power and APM, but APM is not detected here. My video card is too new for this build to detect. The installation can be customized to suit whatever hardware you may have installed, and unlike Windows 3.1x, it does include some video drivers for specific manufacturers like S3 or Cirrus Logic. In the final version, this would become known as Microsoft Plus! Companion for Windows 95. The Plus Pack is a set of optional components that were planned to be sold separately, but are included in this preview build to allow users to test such components (whatever they are, I haven't checked).

I haven't been able to install Chicago 58s without Windows 3.1x, so I have to run Setup on top of a Windows 3.11 installation. The screenshots to be posted on this day mostly come from a single 3-hour stream I ran on my channel where I would go through several random Chicago builds this is the earliest leaked one.

Microsoft chicago beta build 58s