Minute-by-minute summary of the Windows 95 keynote:
00:00: The keynote begins with a warm welcome to the audience.
00:02: The presenter introduces Windows 95 as a major milestone in computing and highlights its user-friendly features.
00:05: A video showcases the evolution of Windows, emphasizing the improvements and innovations in Windows 95.
00:08: The presenter explains the new Start menu, taskbar, and desktop enhancements, demonstrating how they make navigation easier.
00:12: A live demonstration of Windows 95’s multitasking capabilities impresses the audience, showing how multiple applications can run simultaneously.
00:15: The presenter introduces Plug and Play technology, emphasizing how it simplifies hardware installation and configuration.
00:22: The audience learns about the enhanced multimedia capabilities of Windows 95, including support for CD-ROMs, sound, and video.
00:28: The presenter shows the new 32-bit architecture of Windows 95, promoting its improved performance and stability.
00:32: A panel of early adopters shares their positive experiences and success stories with Windows 95.
00:38: The presenter announces the release date of Windows 95 and details the upgrade options for existing Windows users.
00:42: The keynote concludes with a message of excitement and anticipation for the future of computing with Windows 95.
What was actually being launched
The event was 24 August 1995, in a tent on Microsoft’s Redmond campus, with Jay Leno co-hosting alongside Bill Gates. Microsoft licensed “Start Me Up” from the Rolling Stones for the campaign, lit the Empire State Building in the Windows colors, and paid for an entire print run of The Times in London to be given away free. It remains the largest launch the software industry has ever staged.
Underneath the theatre, the technical claims are more interesting than the marketing made them sound, and also more qualified.
The 32-bit story has an asterisk. Windows 95 runs 32-bit applications preemptively multitasked in separate address spaces, which is the real advance over Windows 3.1. But 16-bit applications still run cooperatively in a single shared address space behind a global lock, so one badly behaved old program can still stall the machine. It is a 32-bit operating system sitting on a 16-bit compatibility layer, and a fair amount of the kernel is still 16-bit code for that reason.
Plug and Play needed the BIOS to cooperate. On hardware predating the specification, the OS is guessing at resource assignments for cards that cannot report what they are. The failure mode, two devices fighting over IRQ 5, was common enough to earn the nickname Plug and Pray.
Long filenames were a clever hack. VFAT stores a name longer than 8.3 by chaining hidden extra directory entries marked with an attribute combination that older DOS tools skip over. That’s why a DOS disk utility from 1993 could silently destroy them.
One correction to the summary above: Internet Explorer was not part of the Windows 95 that shipped that day. IE 1.0 arrived in the separately sold Microsoft Plus! pack, and the browser only became part of the base operating system with the OEM releases the following year. The internet story at the August launch was dial-up networking, a TCP/IP stack and The Microsoft Network, not the browser.
Video demonstration of someone else ring testing: