Minimal requirement for windows …
https://support.microsoft.com/en-us/topic/kb5000736-featured-update-to-windows-10-version-21h1-by-using-an-enablement-package-75a01e67-3b5f-4677-8efe-42852e41c7cf
Prerequisites. Before updating to Windows 10, version 21H1 using an enablement package, you must be running Windows 10, version 2004 or 20H2. Restart information. You must restart your device after you apply this update. Update replacement information. This update does not replace any previously released update. Learn about the terminology that Microsoft uses to describe software updates.
Prerequisites. Before updating to Windows 10, version 21H1 using an enablement package, you must be running Windows 10, version 2004 or 20H2.
Restart information. You must restart your device after you apply this update.
Update replacement information. This update does not replace any previously released update. Learn about the terminology that Microsoft uses to describe software updates.
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