Forum Discussion
Windows 10 21H2 and Windows 11 21H2 both show up as "2009" release
I'm not real sure where to post this, so will try here. I have noticed that for both Windows 10 - 21H2 and Windows 11 - 21H2, the "ReleaseID" value in the Registry is incorrectly shown as "2009"....
Yes, Microsoft has effectively deprecated ReleaseID. Starting with Windows 10 20H2, the reliable field is DisplayVersion, not ReleaseID. For product identification, use EditionID + CurrentBuild/UBR instead of ProductName, since the latter can lag or show incorrect values (as with Win11 showing Win10). This is a known issue, and Microsoft hasn’t announced plans to fix the legacy values.