Windows 11 Build 26200.8973 (25H2) Language Pack Error: Mixed English and Vietnamese UI, DISM/CAB failing to fix

Question

Windows 11 Build 26200.8973 (25H2) Language Pack Error: Mixed English and Vietnamese UI, DISM/CAB failing to fix

Quân Võ Hoàng 20

Hi everyone,

I am currently running Windows 11 Pro Build 26200.8973 (Version 25H2). My PC is NOT enrolled in the Windows Insider Program. However, after installing the latest optional preview cumulative update, I am experiencing a severe language localization issue where the user interface is completely mixed between English and Vietnamese.

Here is what I have already tried so far without success:

Downloaded the Windows 11 Vietnamese language pack (.cab file) from Azure Portal.

Attempted to force-install it via CMD using the DISM tool (dism /online /add-package /packagepath:...).

The DISM process completed, but the UI remains heavily mixed (Settings apps, context menus, and taskbar elements are still in English, while only basic system components are translated).

Checked the "Uninstall updates" section in Settings, but this specific update cannot be uninstalled from the GUI (shows "No update found").

Since recent Windows updates change how AppX/LXP packages handle modern UI strings, standard DISM offline/online side-loading is broken for this specific preview build's localization.

Could anyone point me to the correct deployment method for LXP (Language Experience Pack) or provide the appropriate .appx / .msixbundle solution to fix the Vietnamese language for this build?

Thank you for your support!

Tien tran 40 Reputation points

2026-08-15T15:10:03.2666667+00:00

The language pack type is LIP too.
Tien tran 40 Reputation points

2026-08-15T15:10:53.72+00:00

The problem incomplete translate also language pack type of Vietnamese is LIP.
Clary-N 15,070 Reputation points Microsoft External Staff Moderator

2026-08-17T07:54:15.2566667+00:00

Hi Tien tran,

Thank you for confirming. Based on your screenshot, Vietnamese is installed as a Language Interface Pack (LIP) rather than a full Multilingual User Interface (MUI) language pack. LIPs only translate the most commonly used parts of Windows and rely on a parent language for the remaining content, so some menus and settings may continue to appear in English. This behavior may explain the incomplete translation you are seeing.

To better understand your situation, could you also let me know which Windows edition and version you are using (run winver and share the results)? In addition, please let me know what troubleshooting steps you have already tried, such as reinstalling the Vietnamese language pack, changing the Windows display language or testing with a new user account. This will help avoid repeating steps and determine the most appropriate next steps.

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Tien tran 40 Reputation points

2026-08-15T15:10:03.2666667+00:00

The language pack type is LIP too.
Tien tran 40 Reputation points

2026-08-15T15:10:53.72+00:00

The problem incomplete translate also language pack type of Vietnamese is LIP.
Clary-N 15,070 Reputation points Microsoft External Staff Moderator

2026-08-17T07:54:15.2566667+00:00

Hi Tien tran,

Thank you for confirming. Based on your screenshot, Vietnamese is installed as a Language Interface Pack (LIP) rather than a full Multilingual User Interface (MUI) language pack. LIPs only translate the most commonly used parts of Windows and rely on a parent language for the remaining content, so some menus and settings may continue to appear in English. This behavior may explain the incomplete translation you are seeing.

To better understand your situation, could you also let me know which Windows edition and version you are using (run winver and share the results)? In addition, please let me know what troubleshooting steps you have already tried, such as reinstalling the Vietnamese language pack, changing the Windows display language or testing with a new user account. This will help avoid repeating steps and determine the most appropriate next steps.

Answer 1

Clary-N 15,070 Microsoft External Staff Moderator

Hi Quân Võ Hoàng,

Thank you for providing those details.

Based on what you've described, it sounds like the Vietnamese language resources are only partially installed. In current versions of Windows 11, many modern UI elements rely on Language Experience Packs (LXP) and related language components in addition to the traditional CAB language pack. Installing a language pack through DISM alone may not fully localize Settings, taskbar components, and other modern Windows experiences.

As a first step, I recommend checking Settings > Time & language > Language & region and removing then reinstalling the Vietnamese display language directly through Windows, ensuring that all available language features are selected during installation. Microsoft documents that language deployment requires the corresponding language resources and related components to be installed together.

I would also be interested to know whether the issue started immediately after installing a specific cumulative update and whether the device was originally installed in English or Vietnamese. If possible, please open Command Prompt as Administrator and run the following command:

dism /online /get-intl

This will show the currently configured UI language and installed language settings, which may help identify whether the display language configuration is incomplete.

Additionally, please also check whether the issue is isolated to your current user profile. Please create a new local user account by going to Settings > Accounts > Other users > Add account, select "I don't have this person's sign-in information", then "Add a user without a Microsoft account", create the account and sign in to it.

Once signed in to the new profile, go to Settings > Time & language > Language & region, install Vietnamese if necessary, set it as the Windows display language and restart the PC. After signing back in, check whether the interface is still mixed between English and Vietnamese.

If the new account displays Vietnamese correctly, the issue may be related to your original user profile. If the issue occurs in both accounts, it would suggest a system-wide problem with the language resources or the recent update.

I look forward to your update.

If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Quân Võ Hoàng 20 Reputation points

2026-07-29T08:30:39.01+00:00

Hi,Clary-N

Thank you so much for your detailed response!

Per your instruction, I created a new local user account and attempted to install the Vietnamese language pack there. Unfortunately, the issue is completely system-wide. Even on the newly created profile, the user interface remains heavily mixed between English and Vietnamese (Settings app and taskbar components are still in English).

Since this is clearly a system-wide preview update bug and I need my PC to remain stable for daily use, I have decided to completely remove the Vietnamese language pack and switch the system entirely back to default English (US).

The UI is fully stable in English now. I will continue using English for this build and wait for Microsoft to fix these localization string mismatches in future cumulative updates.

Thank you again for your wonderful time and assistance!
Clary-N 15,070 Reputation points Microsoft External Staff Moderator

2026-08-01T07:06:16.56+00:00

Hi Quân Võ Hoàng,

Thank you for the update and for testing with a new local account.

Since the issue also occurred on the new profile, it does appear to be a system-wide issue rather than something specific to your user account. I'm glad to hear that removing the Vietnamese language pack and reverting to English (US) restored a stable and consistent experience.

Thank you for sharing the results and for your patience throughout the troubleshooting process. If you decide to try the Vietnamese language pack again after a future Windows update, feel free to let me know how it goes.

Take care, and all the best!
Quân Võ Hoàng 20 Reputation points

2026-08-18T09:17:44.7266667+00:00

Hi Clary-N,

I would like to provide a quick update on my situation and ask a follow-up question regarding the system's language localization status.

My Windows 11 system has recently updated to the newer Build 26200.9168(KB5121003). Since I previously had to remove the Vietnamese language pack entirely and switch back to default English (US) due to the severe "mixed UI" (half-English, half-Vietnamese) issue on build 26200.8973, I am wondering if this new release has officially resolved the language package string mismatches.

Specifically, I would like to know if the backend deployment team has updated the Language Experience Pack (LXP) or the corresponding modern AppX packages for this build. If I reinstall the Vietnamese display language now through Settings, will it fully localize the system components, modern Settings app, context menus, and taskbar elements without running into the previous half-translated glitch?

If there are any specific steps, standalone .appx / .msixbundle packages, or DISM deployment commands recommended for this specific build (26200.9168) to ensure a complete and successful Vietnamese localization, please let me know.

Thank you so much for your continued support and expertise!
Clary-N 15,070 Reputation points Microsoft External Staff Moderator

2026-08-19T07:36:43.5033333+00:00

Hi Quân Võ Hoàng,

Thank you for the update, and I'm glad to hear you've successfully updated to Build 26200.9168.

Unfortunately, as a community member, I don't have access to Microsoft's internal deployment systems, so I can't confirm whether the Language Experience Pack (LXP), AppX/MSIX localization packages or translation resources were specifically updated for this build.

The most reliable way to determine whether the issue has been resolved is to reinstall the Vietnamese display language through Settings > Time & language > Language & region and test the areas that previously showed mixed localization, such as Settings, taskbar menus, File Explorer context menus and other Windows components.

Before reinstalling, I recommend checking for any additional Windows Updates and Microsoft Store updates, as language-related components can sometimes be delivered through those channels alongside the OS update.

If the mixed English/Vietnamese interface reappears on Build 26200.9168, please capture a few screenshots and submit feedback through Feedback Hub (Win + F). This helps the Windows team investigate any remaining translation or language-pack issues specific to this build.

I hope this helps point you in the right direction. Please let me know the outcome if you decide to reinstall the Vietnamese language pack.
Clary-N 15,070 Reputation points Microsoft External Staff Moderator

2026-08-20T08:37:34.4833333+00:00

Hi Quân Võ Hoàng,

May I know if you have got any chance to check my answer?

I am glad to help if you have any other questions.
Quân Võ Hoàng 20 Reputation points

2026-08-20T09:34:40.2133333+00:00

Hi Clary-N,

Here is a screenshot of the "Settings" app on my Windows 11 device. As you can see, the user interface is currently experiencing a severe localization bug.

If you look closely at the image, the interface is completely broken into a mixed-language state, displaying a combination of both English and Vietnamese. The sidebar menu options—such as "Home", "System", "Bluetooth & devices", "Network & internet", and "Personalization"—are completely stuck in English. However, other parts of the screen, like the Windows Update status box and the Microsoft 365 promotional banner, are correctly rendered in Vietnamese.

This inconsistency makes system navigation very confusing and frustrating to use. I have already verified my system language preferences, reinstalled the Vietnamese language pack, and restarted my computer multiple times, but this half-English, half-Vietnamese issue refuses to go away.

Could you please look into this UI rendering bug and let me know how to fix it or force a clean language update for the Settings app?

Thank you for your support.
Clary-N 15,070 Reputation points Microsoft External Staff Moderator

2026-08-22T07:45:56.9866667+00:00
Since this is a public forum, we will hide your personal identifiable information, and I have sent that image of yours containing your personal identifiable information in a private message so we can work together to resolve the issue. Also, please check your private message in case you want to share another screenshot to avoid leaking your PII by click on the Message button as show below

Hi Quân Võ Hoàng,Since you've already reinstalled the Vietnamese language pack and the issue persists, you may want to try an in-place upgrade repair. This reinstalls Windows while keeping your files, apps and settings intact and can help repair damaged system or language resources.

Download the latest Windows 11 ISO from Microsoft's website.

Right-click the ISO file and select Mount.

Open the mounted drive and run Setup.exe.

Follow the prompts and make sure Keep personal files and apps is selected.

Complete the installation and restart when prompted.

*Disclaimer: Let’s try performing an in-place install or in-place upgrade which will refresh your Windows files and operating system without removing files or applications. That being said, we always recommend that if you have important data, you should back it up before making large system changes. If you want to back up your data first, please do so.

I hope this helps. Please let me know whether the in-place repair resolves the mixed English/Vietnamese interface.