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Windows 10X Windows 10X Icon.svg (codenamed Santorini) was an edition of Windows 10 that had been in development by Microsoft as part of the Windows NT family. It was announced on October 2, 2019 as an operating system to support dual-screen devices, such as the Surface Neo.[1] Windows 10X was originally expected to be released in 2020,[2] On May 19, 2021, Microsoft announced that the project had been cancelled.[3] Some of the features salvaged from 10X were incorporated into Windows 11.[4]

Development status

On May 4, 2020, it was announced that Windows 10X would also support single display devices. The only way to access Windows 10X is to install its image file and Microsoft Emulator from the Microsoft Store.

On May 7, 2021, the Petri IT Knowledgebase reported that Microsoft was shifting development resources back toward Windows 10 updates and that work on 10X had been put "on the back burner, for now."[5][6]

Differences from Windows 10

The design of Windows 10X is similar to the Windows 10 update 2004 that was released in May 2020. However, unlike other Windows builds, Windows 10X is stripped of legacy components to allow for much better performance. Legacy apps would need to be run within an emulator.

  • Taskbar icons are aligned to the center rather to the left.
  • The taskbar is automatically hidden and by pressing it, it will show up.
  • This was originally intended for dual-screen devices, but development was shifted to include single-screen devices.
  • The Action Center is now called Quick Settings.
  • Windows 10X is stripped of all legacy components and legacy apps run in an emulator.


  1. What the heck is Windows 10X? by Sean Hollister, The Verge. 2019-10-04.
  2. Introducing Windows 10X: enabling dual-screen PCs in 2020 by Eran Megdido, Windows Experience Blog, Microsoft. 2019-10-02.
  3. Tom Warren (2021-05-19). "Microsoft confirms Windows 10X is dead". The Verge. 
  4. Windows 11 leak reveals new UI, Start menu, and more by Tom Warren, The Verge. 2021-06-15.
  5. Microsoft Shelves Windows 10X, It is not Shipping in 2021 by Brad Sams, Petri. 2021-05-07.
  6. Microsoft has reportedly stopped development of Windows 10X by I. Bonifacic, Engadget. 2021-05-07.

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