As in previous versions of Windows, a user can change the screen resolution or the monitor setup in Windows 10 using the control panel. However, the dialog that asks for confirmation ("Do you really want to change the screen resolution?") has a button with a timeout of approximately 15 seconds. If you do not press this button within the desired period of time, the changes will be reverted, probably in order to prevent the user from switching any resolution that their monitor setup does not support.
Unfortunately, this button is only accessible by mouse, or at least I fail to find a Shortcut (like Alt-y for "yes"), so the very simple question is:
How can this button be accessed using only a keyboard?
I have attached a screenshot to indicate what the dialog looks like, it's in German language because this is the only test system available at the moment.