Remembering How Microsoft's Fake Windows Error Ended In a $280 Million Secret Settlement (makeuseof.com)
(Wednesday July 01, 2026 @08:00AM (EditorDavid)
from the history-lesson dept.)
Slashdot reader [1]joshuark summarizes this walk down memory lane [2]from the tech site MakeUseOf :
> Facing real competition from Digital Research's DR DOS, Microsoft secretly embedded a sabotaging mechanism known as "AARD code" into beta versions of Windows 3.1 to prevent it from running on Digital Research's competing DR DOS operating system.
> This code triggered fake, alarming error messages to convince developers that DR DOS was unstable... Although Microsoft disabled the feature in the final retail release, the California-based firm Caldera, Inc., which had acquired DR DOS assets, sued Microsoft for anti-competitive practices.
> Microsoft settled the lawsuit out of court in 2000 for $280 million, a figure that remained sealed until it was unsealed in 2009.
[1] https://www.slashdot.org/~joshuark
[2] https://www.makeuseof.com/microsofts-windows-fake-error-ended-in-a-280-million-settlement/
> Facing real competition from Digital Research's DR DOS, Microsoft secretly embedded a sabotaging mechanism known as "AARD code" into beta versions of Windows 3.1 to prevent it from running on Digital Research's competing DR DOS operating system.
> This code triggered fake, alarming error messages to convince developers that DR DOS was unstable... Although Microsoft disabled the feature in the final retail release, the California-based firm Caldera, Inc., which had acquired DR DOS assets, sued Microsoft for anti-competitive practices.
> Microsoft settled the lawsuit out of court in 2000 for $280 million, a figure that remained sealed until it was unsealed in 2009.
[1] https://www.slashdot.org/~joshuark
[2] https://www.makeuseof.com/microsofts-windows-fake-error-ended-in-a-280-million-settlement/