Hi,
You have posted in the general Windows Server Update Services (WSUS) forum, since your issue is related to Windows 10 language I suggest you ask over at the dedicated Windows 10 General forum over here:
https://learn.microsoft.com/en-us/answers/topics/windows-10-general.html
----------
(If the reply was helpful please don't forget to accept as answer, thank you)
Best regards,
Leon