Windows 1.0

Windows 1.0 shipped on November 20, 1985, two years late and underwhelming, a $99 shell bolted onto MS-DOS that asked owners of underpowered PCs to drive it entirely with a mouse most of them didn’t own. It could only tile its windows edge to edge — no overlaps, no stacking, because Microsoft’s lawyers had told the team to keep a visible distance from the Macintosh interface Steve Jobs had already accused Bill Gates of stealing to his face. The New York Times clocked its performance on a 512 KB machine as like “pouring molasses in the Arctic,” and by April 1987 Microsoft had moved only about 500,000 units, a trickle next to the millions of PCs running bare DOS. Microsoft kept it on price lists and support rosters anyway, patching and reissuing point releases through 1.04, refusing to let the flop read as a verdict on the idea.

The verdict came slower than the sales figures suggested it should. Windows 2.0 added overlapping windows in 1987, Windows 3.0 made the platform profitable in 1990, and by the time Microsoft finally cut off support for the original release on December 31, 2001 — the same day it also retired Windows 95 and 3.1 — Windows 1.0 had been unsellable for a decade and a half, kept alive on paper past any plausible install base. The specific bits from November 1985, tiled windows and all, never shipped again after 2.0 replaced them; what survived was the brand and the bet that a graphical shell over DOS was worth iterating on, not the software itself.