I downloaded via Krohn ISO downloader the ISO for Windows 10 Pro 64 bit International English.

The downloaded ISO file is named "Win10_21H2_EnglishInternational_x64.iso" - a strong indicator that I downloaded the correct ISO.

But when I peek into these ISO files I got an unexpected build version: Version : 10.0.19041
(Full output see at the end of this posting).

Now when I compare the build version with the version 21H2 should have then they are different.
According e.g. to the table in Wikipedia https://en.wikipedia.org/wiki/Windows_10_version_history

21H2 should have a build version of ".....19044...." and not ".....19041 ....."

Whats wrong?

Output:
Index : 1
Name : Microsoft Windows PE (x64)
Description : Microsoft Windows PE (x64)
Size : 1.766.536.550 bytes
WIM Bootable : No
Architecture : x64
Hal : <undefined>
Version : 10.0.19041
ServicePack Build : 1288
ServicePack Level : 0
Edition : WindowsPE
Installation : WindowsPE
ProductType : WinNT
ProductSuite :
System Root : WINDOWS
Directories : 4816
Files : 17217
Created : 07.12.2019 - 15:13:54
Modified : 06.10.2021 - 20:27:26
Languages :
en-GB (Default)
The operation completed successfully.

Deployment Image Servicing and Management tool
Version: 10.0.19041.844

Details for image : F:\sources\boot.wim

First, you should probe the install.wim, not the boot.wim

 

I have the same result here, and it's normal, that's because from  Windows 10 2004/20H1 to 21H2 the files are basically the same, the difference are only on logical level (with a registry key).

Détails pour l’image : H:\sources\install.wim

Index : 1
Nom : Windows 10 Famille
Description : Windows 10 Famille
Taille : 14 864 768 276 octets
Peut être démarré par WIM : Non
Architecture : x64
Couche HAL : <non défini>
Version : 10.0.19041
Build du Service Pack : 1288
Niveau du Service Pack : 0
Édition : Core
Installation : Client
Type de produit : WinNT
Suite de produits : Terminal Server
Racine système : WINDOWS
Répertoires: 27227
Fichiers : 99865
Création : 06/10/2021 - 15:43:42
Modification : 06/10/2021 - 20:17:27
Langues :
        fr-FR (Par défaut)

 

If you don't believe me, just install the iso in a virtual machine.