Permission has been set, which is set in the Security tab. You only have regular, * * * enjoyment and customization, and may enable the function of "simple file * * * enjoyment". Windows XP is turned on by default, and the "Security" tab is not visible when the function is turned on, so we need to cancel it. The method is: open my computer, click Tools menu → Folder Options → View, uncheck "Enjoy * * * (recommended) with simple files" in the list, and then click OK to exit. Go back to the left, right-click-Properties, click the Security tab, and you have permission to set it. Uncheck all boxes and confirm.