If windows "Fully localized language" Code: dism /online /get-intl Deployment Image Servicing and Management tool Version: 10.0.22621.1 Image Version: 10.0.22621.1848 Reporting online international settings. Default system UI language : ru-RU The UI language fallback is : en-US System locale : ru-RU Default time zone : Russian Standard Time Active keyboard(s) : 0409:00000409, 0419:00000419 Keyboard layered driver : PC/AT Enhanced Keyboard (101/102-Key) Installed language(s): en-US Type : Fully localized language. Installed language(s): ru-RU Type : Partially localized language, MUI type. Fallback Languages en-US differs from language of target image Code: WIM Information: ---------------- Path: D:\sources\install.esd GUID: 0xfe75207ec17c6f48aaaee3e44544802e Version: 3584 Image Count: 3 Compression: LZMS Chunk Size: 131072 bytes Part Number: 1/1 Boot Index: 0 Size: 3016907646 bytes Attributes: Relative path junction Available Images: ----------------- Index: 1 Name: Windows 11 Home Description: Windows 11 Home Display Name: Windows 11 Home Display Description: Windows 11 Home Directory Count: 29462 File Count: 115525 Total Bytes: 17036840607 Hard Link Bytes: 7779694599 Creation Time: Sat May 07 11:29:17 2022 UTC Last Modification Time: Fri Jun 30 07:38:55 2023 UTC Architecture: x86_64 Product Name: Microsoftо Windowsо Edition ID: Core Installation Type: Client Product Type: WinNT Product Suite: Terminal Server Languages: en-US ru-RU Default Language: ru-RU System Root: WINDOWS Major Version: 10 Minor Version: 0 Build: 22631 Service Pack Build: 1972 Service Pack Level: 0 Flags: Core WIMBoot compatible: no A choice to keep personal files and apps is unavailable. An old registry tweak of changing HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nls\Language\InstallLanguage doesn't work since 20h1. Anyone has a clue how to fix this issue?
Do you have Dism++ tool on your PC? With it, it is very easy to change the language of the image to the desired one.
I was able to do in-place-upgrade the originallly Japanese version with a pre-installed Russian language pack to a full update with saving files and settings using Dism++.
I confirm. Your method works! The key moment is to /Set-SKUIntlDefaults to match the target image language.