Windows 7 - Change the set of accepted regional themes

[ThatRandomToast]

1. Grab your desired MCT-[ISO country code here] folder from the Windows 7 image in another language (e.g. MCT-JP from the Japanese installation image).
2. Copy the folder to

Code: Select all

%windir%\Globalization\MCT

in your current Windows 7 installation. Here I will be using Windows 7 installed from the vanilla US English image.
3. Open regedit and navigate to

Code: Select all

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MCT

.
4. Create a new key with the exact same name as your MCT folder (e.g. MCT-JP).
5. In the MCT key you have created, create these values:

Value name	Type of value	What does the value do
GeoID	DWORD (32-bit Value)	Windows region to display the MCT. For a list of region IDs, please visit: https://learn.microsoft.com/en-us/windows/win32/intl/table-of-geographical-locations
Link	Multi-String Value	Default regional bookmarks to be added to Internet Explorer (optional). These bookmarks are stored in Code: Select all %windir%\Globalization\MCT\MCT-[ISO country code]\Link
Theme	Multi-String Value	The name of the theme file located in Code: Select all %windir%\Globalization\MCT\MCT-[ISO country code]\Theme example: Code: Select all %windir%\Globalization\MCT\MCT-JP\Theme\JP.theme
Wallpaper	Multi-String Value	The name of the image files located in Code: Select all %windir%\Globalization\MCT\MCT-[ISO country code]\Wallpaper in a list (e.g. JP-wp1.jpg to JP-wp6.jpg). List separated by pressing Enter.

6. Close all the Personalization Control Panel windows, if any.
7. Open intl.cpl (Region and Language), go to the Location tab, set the region to the one you registered the MCT for in previous steps (e.g., if you registered MCT-JP, set the region to Japan), and click Apply.
8. Now open the Personalization Control Panel, click on the new theme appears in the "Aero Themes" section. Click "Desktop Background" and then "Cancel", if the regional theme in the "Aero Themes" section remains selected, you have configured the theme and wallpaper set correctly.



Pre-made files: