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how to download language package offline，my computer system is Windows 10 21h1.
Hi, thank you for coming to the forum. I will be happy to assist in the best way I can.
Did you mean to download it without the internet? However, you may need an internet connection to be able to download the language pack.
Please click this link to see what languages you can download in Windows 10.
If the reply is helpful, please Upvote and Accept it as an answer.