Hi, my name is Kelly, and I'm an independent consultant and I'm here to help.
To apply the Extra Large icon view to all subfolders in Windows 10 Explorer and Navigator clicks, you can try the following steps:
Open the top-level folder in Windows Explorer and set the view to Extra Large icons.
Right-click on a blank area in the folder and select "Properties."
In the Properties window, click on the "Customize" tab.
Under "Optimize this folder for," select "Pictures" or "Videos" depending on the type of content in the folder.
Check the box next to "Also apply this template to all subfolders."
Click "OK" to save the changes.
This should apply the Extra Large icon view to all subfolders within the top-level folder. If this does not work, you can try resetting the folder view settings to the default by following these steps:
Open the top-level folder in Windows Explorer.
Click on the "View" tab at the top of the window.
Click on the "Options" button on the far right side of the toolbar.
In the Folder Options window, click on the "View" tab.
Click on the "Reset Folders" button.
Click "Yes" to confirm the action.
Click "OK" to save the changes.
This will reset all folder view settings to their default settings, which should allow you to apply the Extra Large icon view to all subfolders. If neither of these options work, you can try using a third-party file explorer such as XYplorer or Directory Opus, which may have more advanced folder view settings.