After upgrading to 26h2 UI is English and German

Kenneth Murawski 0 Reputation points
2026-11-12T10:51:17.74+00:00

After installing the latest feature update, 26h2, Windows sometimes displayed English and sometimes German.

Installing the latest update, KB5127648—the October 2026 Security Update—didn't help.

No solution has worked so far. The time is correct, the region and language are all set correctly, yet Windows still displays two languages at the same time.

Uninstalling updates and using “Go Back” failed.

Translated with DeepL.com (free version)

Windows for home | Windows 11 | Windows update
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  1. DaveM121 948.5K Reputation points Independent Advisor
    2026-11-12T11:26:56.1466667+00:00

    Hi Kenneth,

    This is a problem that usually happens if you have previously changed the UI language in Windows, the best option to resolve this is to use the Windows 11 ISO to perform an in-place repair, before proceeding, please backup your files.

    Please ensure you download the ISO in the same language as you use for the Windows UI, follow the steps, this is then not like re-installing Windows, it is just like an update and your personal files, settings and installed software will not be affected.

    Click this link:

    https://www.microsoft.com/software-download/windows11

    to download the Windows 11 ISO

    When the ISO file completes downloading

    Disconnect from the Internet

    Disconnect all external devices with the exception of a mouse or keyboard.

    Temporarily disable any 3rd party Anti-virus you may have installed

    Then, in Windows File Explorer, double click the ISO and then run Setup.exe and select the Install option.

    Very Important - ensure you select the option to keep your files and apps.

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