Windows…
DeveloperMicrosoft
Source model• Closed-source
• Source-available (through Shared Source Initiative)
Initial releaseNovember 20, 1985
Latest releaseWindows 11 26H1 (10.0.28000.2340) (June 23, 20261) [±]
25H2 (10.0.26200.8737) (June 23, 20262) [±]
Latest preview• Release Preview : 25H2 (10.0.26200.8728) (June 12, 2026 (2026-06-12) 3) [±]
• Release Preview (26H1) : (10.0.28000.2333) (June 12, 2026 (2026-06-12) 4) [±]
• Beta : 25H2 (10.0.26220.8690) (June 19, 2026 (2026-06-19) 5) [±]
• Beta (26H1) : (10.0.28020.2308) (June 19, 2026 (2026-06-19) 6) [±]
• Experimental : 25H2 (10.0.26300.8697) (June 19, 2026 (2026-06-19) 7) [±]
• Experimental (26H1) : (10.0.28120.2315) (June 19, 2026 (2026-06-19) 8) [±]
• Experimental (Future Platforms) : (10.0.29613.1000) (June 19, 2026 (2026-06-19) 9) [±]
Repository• github .com /Microsoft
Marketing targetPersonal computing
Available in110 languages
Update method• Windows Update
• Microsoft Store
• Windows Server Update Services (WSUS)
Package managerWindows Installer (.msi, .msp),10 App Installer (.msix,.11 msixbundle1213), Microsoft Store (.appx, .appxbundle),14 Windows Package Manager
Supported platformsIA-32, x86-64, ARM, ARM64
Previously: 16-bit x86, DEC Alpha, MIPS, PowerPC, Itanium
Kernel type• Windows NT family: Hybrid
• Windows Embedded Compact /Windows CE: Hybrid or Monolithic
• Windows 9x and earlier: Monolithic (MS-DOS and VMM32)
Default
user interface
Windows shell
LicenseProprietary commercial software
Official websitewindows.com

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Footnotes

  1. “June 23, 2026—KB5095091 (OS Build 28000.2340) Preview”. Microsoft Support. Microsoft. ↩

  2. “June 23, 2026—KB5095093 (OS Builds 26200.8737 and 26100.8737) Preview”. Microsoft Support. Microsoft. ↩

  3. “Windows 11 Insider Release Preview Build 26100.8728/26200.8728”. Microsoft Learn. June 12, 2026. ↩

  4. “Windows 11 Insider Release Preview Build 28000.2333”. Microsoft Learn. June 12, 2026. ↩

  5. “Windows 11 Insider Beta Preview Build 26220.8690”. Microsoft Learn. June 19, 2026. ↩

  6. “Windows 11 Insider Beta (26H1) Preview Build 28220.2308”. Microsoft Learn. June 19, 2026. ↩

  7. “Windows 11 Insider Experimental Preview Build 26300.8697”. Microsoft Learn. June 19, 2026. ↩

  8. “Windows 11 Insider Experimental (26H1) Preview Build 28120.2315”. Microsoft Learn. June 19, 2026. ↩

  9. “Windows 11 Insider Experimental (Future Platforms) Preview Build 29613.1000”. Microsoft Learn. June 19, 2026. ↩

  10. Su, Christy; Xu, Simonx (November 25, 2021). “FAQ about the Windows Installer.msp files - Dynamics GP”. Microsoft Learn. Archived from the original on July 8, 2023. Retrieved September 13, 2023. ↩

  11. dianmsft; Jenks, Alma; Coulter, David; Schofield, McLean; Vintzel, John; Satran, Michael; Donthini, Chaitanya; Kinsman, Mike (December 30, 2021). “What is MSIX?”. Microsoft Learn. Archived from the original on September 25, 2023. Retrieved September 13, 2023. ↩

  12. Jahiu, Dhurata; Jenks, Alma; v-chmccl; Power, Cory; Coulter, David; Schofield, McLean; Donthini, Chaitanya; Satran, Michael (April 13, 2022). “How to bundle MSIX packages”. Microsoft Learn. Archived from the original on October 4, 2023. Retrieved September 13, 2023. ↩

  13. Vera (June 26, 2023) [April 14, 2023]. “How to Install MSIXBundle on Windows 10/11? 2 Ways to Try!”. MiniTool. Archived from the original on August 21, 2023. Retrieved September 13, 2023. ↩

  14. “App packages and deployment (Windows Store apps) (Windows)”. Microsoft Learn. October 19, 2021 [October 6, 2015]. Archived from the original on March 30, 2014. Retrieved April 5, 2014. ↩