Windows Core OS concept
Image Courtesy: Harry

At the October 2019 event, Microsoft might announce the long rumoured dual-screen device with lightweight Windows Core OS, which has been specifically designed to support dual displays hardware.

Over the past few years, and especially over the last few months, we have come across several mentions of Windows Core OS (WCOS) in Microsoft’s LinkedIn profiles. One of the profile recently revealed that Microsoft is working on a new Action Center tailored for Windows Core OS.

Today, we spotted mentions of Windows Core OS in support documentation published by Microsoft earlier this year – the first time the much-rumoured Windows Core OS name has been used by Microsoft in the official documentation.

The document is for Windows 10’s basic level Windows diagnostic events and fields, and Microsoft has published this privacy-focused document for every latest Windows 10 update. A section of the page, which describes the properties that could be populated by a logging library on Windows, also include mentions of Windows Core OS:

  • wcmp The Windows Shell Composer ID.
  • wPId The Windows Core OS product ID.
  • wsId The Windows Core OS session ID.


According to Github, Windows Core OS mentions were added to the document on April 19, 2019.

In related news, a report recently claimed that Microsoft has been showing off its dual-screen device internally. Also, a patent published on Tuesday revealed a liquid-based hinge design for Microsoft’s foldable device.

This Microsoft product is due next year, sometime in the first half of 2020, but it could be unveiled at the October 2019 event.

About The Author

Mayank Parmar

Mayank Parmar is an entrepreneur who founded Windows Latest. He is the Editor-in-Chief and has written on various topics in his seven years of career, but he is mostly known for his well-researched work on Microsoft's Windows. His articles and research works have been referred to by CNN, Business Insiders, Forbes, Fortune, CBS Interactive, Microsoft and many others over the years.