This means that users can choose whether to upgrade to this build as of now. Microsoft has released Windows 10 21H2 as an optional preview update to the Windows Insider Release Preview channel. Please visit this page to download Windows 10 Version 21H2 ISO (direct download links). Update: Windows 10 Version 21H2 Stable version has been released by Microsoft. For those of you who could not upgrade your operating system to Windows 11, there’s good news! You can now upgrade your Windows 10 version 21H1 (or older) to the latest Windows 10 version 21H2.