Hi @WwW ,
Here is a quite similar issue like you have.
Hopefully, you will get some tips.
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Hi,
Just updated Windows 10 from 1909 to 21H2, found language not completely changed from US English to JP Japanese after updated.
Like Edge has changed to JP but Windows interface hasn't.
Tried to re-install language / Create new user but still not fix the issue.
Do you have any ideas ?
Thanks
Hi there,
The common reason for the "Windows 10 Display Language Not Changing" issue, is that the language pack for the desired display language is not installed or the pack is corrupted, but as you have uninstalled and reinstalled it this might be due to corrupted registries or the update package issue. Try restoring the PC to older dates and then try to install the update again. Recovery options in Windows https://support.microsoft.com/en-us/windows/recovery-options-in-windows-31ce2444-7de3-818c-d626-e3b5a3024da5
You can also try to fix Windows corruption errors with DISM & SFC tools. System file check is a utility built into the Operating System that will check for system file corruption. Use the System File Checker tool to repair missing or corrupted system files https://support.microsoft.com/en-us/topic/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system-files-79aa86cb-ca52-166a-92a3-966e85d4094e
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