Fixing Half English Half Vietnamese issues in Windows 10 Version 1903 - 22H2

Question

I used ISO from Official Microsoft Install Assistant, Microsoft Media Creation Tool and Archive.org and then I install Vietnamese Language Pack then this happended:

1. The language partially changed to Vietnamese, some parts are continue display English (Calculator, Clock, Calendar will be Vietnamese soon if I update Microsoft Store Apps).
2. There are 2 MUI files are missing in C:\Windows\vi-VN - explorer.exe.mui and notepad.exe.mui files. But there is only 1 MUI file - helppane.exe.mui is exist.
3. Inside the HKN's post, C:\Windows\System32\vi-VN also missing 258 files.
4. In File Explorer, ribbon displays "Tệp Home Share View"/"Tệp Computer View"/"Tệp Network View" and search box displays "Search (Path)".
5. Can anyone helping me solve this issues? For more information, visit full questions made by Huy Khôi Nguyễn and Anonymous here: https://learn.microsoft.com/en-us/answers/questions/5655305/why-does-windows-10-show-mixed-english-and-vietnam - HKN; https://learn.microsoft.com/en-us/answers/questions/3937370/the-language-pack-hasnt-been-fully-installed - Anonymous.

Answer 1

Hi Tien tran,

Based on what you've described, this appears less likely to be a damaged Windows installation and more likely related to the Vietnamese language resources available for your current Windows 10 build. The fact that the issue occurs across multiple installation sources and versions, combined with missing language files such as explorer.exe.mui and notepad.exe.mui, suggests that certain interface components may be falling back to English when localized resources are unavailable.

As a quick check, please verify whether Vietnamese is installed as a full display language:

1. Open PowerShell as Administrator.
2. Run: Get-InstalledLanguage
3. Review the results and check whether Vietnamese is listed as a full language installation or as a Language Interface Pack (LIP).

If Vietnamese is only partially installed, some Windows elements may continue to display in English by design. Also, manually copying missing .mui files from another system is not recommended, as it can cause servicing or update-related issues later.

If complete Vietnamese localization is essential, you may also want to compare the behavior on Windows 11, where language support coverage has been improved in many areas.

Let me know if you need further assistance, feel free to ask me by clicking "Add Comment" or "Add Answer" if you cannot add comment so your response will be visible. Thanks for your effort.

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