i am trying to read the windows build version (21H1,20H2 ...) from an installation iso file.
Until some time ago I used the workflow of mounting the corresponding .iso, asking the \source\setup.exe for its file version and then matching it with https://docs.microsoft.com/en-us/windows/release-health/release-information .
But since Windows 2004 I have the problem that these versions differ from each other. For example I have a .iso for a Windows 10 21H1 - which should have a build version around 10.0.19043.xxx according to the website, but the setup.exe inside the .iso has the version 10.0.19041.xxx.
So I've tryied to use dism to check the build verion (dism /Get-WimInfo /WimFile:E:\sources\install.wim /index:1) but I also get the information "Version: 10.0.19041".
According to the website this is not correct for the 21H1.
After an installation on a VM for test purposes, the winver shows me as expected the version 21H1(Build 10943.929)
Technicaly, this make sense to me because the setup contains the same base "setup" and probably there are some ServicePacks that are installed after the base version (10941.xxx)
So, its not possible to resolve that problem via service pack number because these numbers are not in an logical order (20H2 updated Nov 2021 has a later service pack number than 21H1 updated Oct 2021)
