HKEY_CURRENT_USER\Control Panel\Input Method Value name: Default Profile Data: Hex GUID of the input method.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layouts Each layout’s folder has a Layout Text name. The folder name itself is the GUID. Chrome using French
Many people think changing the display language or installing a new keyboard layout is enough. It isn’t. This guide dives deep into what this override actually does, how it differs from other language settings, and the specific scenarios where you need it. Windows 11 (and 10 before it) treats keyboard layouts on a per-application, per-window basis . You can have Notepad using English, Chrome using French, and PowerShell using Japanese—all at the same time. Chrome using French
Example for US English: 00000409 (not a GUID, but a locale ID—older format still works). Chrome using French