Windows 10 is turning 10: Here are top 10 features and changes it introduced

July 28, 2025

As Windows 10 approaches its tenth anniversary on July 29, it stands as a significant chapter in Microsoft’s history, particularly as mainstream support nears its conclusion. Despite facing its share of controversies and shortcomings, especially regarding privacy, Windows 10 has earned its place as a pivotal operating system, largely due to the missteps of its successor, Windows 11, which launched in 2021. This retrospective highlights ten notable achievements and features that have defined Windows 10’s legacy.

10. Windows Insider Program

Launched in late 2014, the Windows Insider Program revolutionized Microsoft’s approach to product development. By inviting both enthusiasts and everyday users to participate in shaping the future of Windows, Microsoft fostered a collaborative environment. Testers provided feedback on preview updates, engaged in webcasts, and contributed to the evolution of the operating system. The program quickly gained traction, amassing over 1 million testers within two weeks. While some critics argue that the quality of Windows has declined since testing was largely handed to the public, the introduction of a public beta program remains a noteworthy milestone.

9. Biggest Launch Ever (and Free)

While not a feature per se, the launch of Windows 10 marked a significant moment for Microsoft. For the first time, users of Windows 7 and 8.1 could upgrade to a full version of the operating system at no cost. This unprecedented move led to over 350 million devices upgrading within the first year, driven by the accessibility of the hardware requirements and the allure of a free upgrade.

8. Windows as a Service

Windows 10 introduced the concept of a continuously evolving operating system, eliminating the need for major updates every few years. Instead, Microsoft adopted a bi-annual feature update model, which led many to speculate that Windows 10 would be the last version of Windows. Although Windows 11 eventually emerged, it retained the essence of Windows as a Service, with ongoing feature drops and updates.

7. Activation Improvements

With Windows 10, Microsoft streamlined the activation process by allowing users to link their licenses to Microsoft accounts. This enhancement enabled users to retain their licenses even after significant hardware changes, such as motherboard replacements. The digital entitlement feature simplified the activation process, a capability that continues in Windows 11.

6. Windows Subsystem for Linux

Introduced in 2017, the Windows Subsystem for Linux (WSL) was a game-changer for the developer community. It allowed users to run Linux applications and distributions directly within Windows, eliminating the need for virtual machines or dual-boot setups. Microsoft has continued to enhance WSL, introducing WSL 2 with significant improvements, solidifying its commitment to developers.

5. Windows Hello

While biometric authentication existed prior to Windows 10, it was often cumbersome and not widely adopted. The introduction of Windows Hello brought a modern, secure method for logging into Windows, supporting facial recognition, fingerprint scanners, and PINs. This feature not only streamlined the login process but also allowed applications and browsers to utilize Windows Hello for authentication, making biometric security a standard feature in modern devices.

4. Start Menu

Despite the mixed reception of Windows 8.1, its Start menu was a focal point of criticism. With Windows 10, Microsoft redesigned the Start menu, blending elements of the classic Windows 7 interface with live tiles from Windows 8. The result was a user-friendly menu that has been widely regarded as the best iteration to date, evolving through various updates and enhancements.

3. Xbox Play Anywhere

Windows 10 marked a turning point in Microsoft’s treatment of PC gamers, particularly with the introduction of the Xbox Play Anywhere program. This initiative allowed users to purchase a game once and play it on both PC and Xbox, seamlessly syncing progress across platforms, thereby enhancing the gaming experience for users.

2. Microsoft Defender

With Windows 10, Microsoft included a built-in antivirus solution by default, a significant step forward in user security. Unlike previous attempts, Microsoft Defender offered robust protection without the need for third-party solutions. While some features have drawn criticism, particularly from gamers concerned about performance, Microsoft Defender has consistently ranked highly in antivirus benchmarks, providing reliable security for the average user.

1. Dark Mode

Though still a work in progress, Windows 10’s introduction of a proper dark mode was a welcome addition for many users. Coupled with the Night Light feature, it provided a more comfortable viewing experience for those working late or using OLED displays. As users look forward to further refinements, the dark mode remains a testament to Windows 10’s commitment to user-friendly design.


This story is part of our “10 Years of Windows 10” collection, in celebration of the operating system’s tenth anniversary. Over the next few days and weeks, you’ll be able to find more content on this topic in our dedicated section available here.

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Windows 10 is turning 10: Here are top 10 features and changes it introduced