A California lawsuit argues that Microsoft shouldn’t be able to end support until Windows 10's market share shrinks significantly.

A California man is suing Microsoft, alleging that ending Windows 10 support is an anticompetitive move to force users into buying new PCs, creating a captive market for its AI-powered services. What’s happened? California resident Lawrence Klein has filed a class-action lawsuit against Microsoft.

Klein's argument boils down to claims that Microsoft violated California's business, advertising, and consumer legal relief regulations by forcing unnecessary upgrades on Windows 10 users and leaving those who choose not to upgrade without necessary security updates.