Microsoft released the Windows 10 21H2 build only to the insider channel called the Release Preview Channel. As per Microsoft, this is released to Insiders if their PC does not meet the requirements for Windows 11. It’s already confirmed that the Windows 10 21H2 update will be via an enablement package.
There are three insider channels; the release preview channel is the third. Windows updates are first released to the Dev channel and then to the Beta channel. The third insider ring is called the Release Preview Channel.
Windows 10 21H2 is released only for update seekers, who are users who manually check for updates from the settings application.
The latest build version of Windows 10 21H2 (Insider) is 10.0.19044.1149. These details are coming from WZorNET on Twitter.
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How to Get Windows 10 21H1 Build
Let’s ensure your device is joined to the Windows Insider program and that you are part of it. We have explained the Windows 11 Insider Program Registration Process and ensured you join the release preview channel. You can confirm whether your device is part of an insider program using the following method:
- Open the Settings application from the start menu.
- Click on Updates and Security.
- Click on the Window Insider Program tab.

- Upgrade Windows 10 21H2 using SCCM Task Sequence | Best Guide
- Windows 10 21H2 Support is Ending in June
- List of Windows 10 21H2 Group Policy Settings
NOTE: More details about the Windows 10 21H2 release to insiders are available. Announcing Windows 10 Insider Preview Build 19044.1147 (21H2) | Windows Insider Blog.
As mentioned above, click the Windows Updates tab and click the check for updates button to become a seeker. This manual update-seeking action puts your device into the early rings of update release within the release preview channel.
- Click on the 2021-07 cumulative update preview for Windows 10 21H2 for x64-based systems (KB5004296) update to start the installation.
- After the installation of KB5004296, the build version of Windows 10 21H2 is changed to 10.0.19044.1149.

We also noticed that the 2021-07 cumulative update preview for Windows 10 21H1 for x64-based systems (KB5004296) update is released to Windows 10 21H1 devices.

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Anoop C Nair has been Microsoft MVP for 10 consecutive years from 2015 onwards. He is a Workplace Solution Architect with more than 22+ years of experience in Workplace technologies. He is a Blogger, Speaker, and Local User Group Community leader. His primary focus is on Device Management technologies like SCCM and Intune. He writes about technologies like Intune, SCCM, Windows, Cloud PC, Windows, Entra, Microsoft Security, Career, etc.