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According to your description, I test on my environment, but I did not encounter with this issue, the language can be downloaded successfully on this page.
I suggest you change the browsers, clear the cookies and cache to have a check.
If any security software is enabled, I suugest you temporarily disable it.
In addition, if you are using Windows 10, please reset your IE.
If possible, please change the network connection for a test, such as mobile phone hotspot, etc.
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