 2015 Microsoft operating system version | |
| Developer | Microsoft |
|---|---|
| Written in | C, C++, C#, Assembly |
| OS family | Microsoft Windows |
| Working state | Current |
| Source model | Closed-source Source-available (through Shared Source Initiative) |
| Released to manufacturing | July 15, 2015 (2015-07-15) |
| General availability | July 29, 2015 (2015-07-29) |
| Final release | |
| Final preview | Release Preview Channel (discontinued) 22H2 (10.0.19045.7846) (November 10, 2026 (2026-11-10)1) [±] |
|---|
| Marketing target | Personal computing |
|---|
| Available in | 110 languagesnote 123 |
|---|
| Update method | Windows Update Windows Server Update Services |
|---|
| Supported platforms | IA-32, x86-64, ARM6445678 |
|---|
| Kernel type | Hybrid (Windows NT kernel) |
|---|
| Userland | Native API Windows API .NET Framework Universal Windows Platform Windows Subsystem for Linux NTVDM (IA-32 only) |
|---|
| Default user interface | Windows shell (graphical) |
|---|
Windows 10 is a major release of the Windows NT operating system developed by Microsoft. The successor to Windows 8.1, it was released to manufacturing on July 15, 2015, became generally available on July 29, 2015,16 and was a free upgrade to users of Windows 7, 8, and 8.1. Its server counterparts are Windows Server 2016, 2019, and 2022. It was succeeded by Windows 11 in October 2021.17
Not to be confused with the related operating system for mobile devices, Windows 10 Mobile or the first release of Windows, Windows 1.0.
In contrast to the tablet-oriented approach of its predecessor, Windows 10 returned to a desktop-oriented interface in line with previous versions of Windows and reintroduced the Start menu. Other features included the Cortana virtual assistant, Task View and virtual desktops, Action Center, biometric authentication through Windows Hello, an improved Settings component, Xbox Live integration, and DirectX 12. Also, Microsoft Edge was introduced, deprecating Internet Explorer. Unlike previous NT releases, Windows 10 received free feature updates on an ongoing basis.note 5 Alternatively, enterprise environments can use long-term support milestones that receive only critical and security updates.1819 An ARM version of Windows 10 was released in 2018.20
Windows 10 received generally positive reviews. Praise was given to the return of the desktop interface, improved bundled software compared to Windows 8.1, and other capabilities, while criticism was directed at behavioral changes such as mandatory update installation, privacy concerns over data collection, and adware-like tactics to promote the operating system on release.21 Microsoft aimed to have Windows 10 installed on over a billion devices within three years of release;18 ultimately, that goal was reached in March 2020, almost five years later.22 By January 2018, it surpassed Windows 7 as the most popular version of Windows worldwide, until Windows 11 took the top spot in June 2025.23 As of October 2026, Windows 10 is the second-most-used version of Windows, accounting for 25% worldwide share, while Windows 11 holds 74%.24
It is the last version of Windows that supports 32-bit processors,note 7 BIOS firmware,note 8 and systems with no TPM or TPM 1.2;note 933 it is also the last to officially lack a CPU model check before installation.note 1034 Support ended on October 14, 2025, except for editions in the Long-Term Servicing Channel (LTSC) or enrolled in the Extended Security Updates program.10
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