Hi, @SyrinxTemple
Thank you for posting in Microsoft Q&A forum.
Have we restart the two computers after the upgrade finished?
And what build number we can get by this powershell command:
(Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name CurrentBuild).CurrentBuild
and MECM shows them as 1903 also
Those data of console are collected via heartbeat discovery. The default schedule of heartbeat discovery is 7 days, so there is usually a delay in updating the operating system version in the SCCM console.
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