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Today in History: Microsoft Windows 1.0 Makes Public Debut Today

11/20/2025

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Summary

Story summary

On November 20, 1985, Microsoft released Windows 1.0, marking the debut of its graphical operating system for personal computers. This significant launch introduced users to a new interface, paving the way for future Windows versions and transforming personal computing. The European version followed in May 1986 as Windows 1.02.

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Story summary

On November 20, 1985, Microsoft released Windows 1.0, marking the debut of its graphical operating system for personal computers. This significant launch introduced users to a new interface, paving the way for future Windows versions and transforming personal computing. The European version followed in May 1986 as Windows 1.02.