How vexing! If you happen to encounter the Windows 10 Screen saver not working or won’t quit error after the Creators Update, below are 3 easy tricks to help you out. The only way to get rid of the Screen saver won’t terminate malfunction get back to the desktop is to press Alt, Ctrl, Delete and then click cancel or Alt+Tab.
Moving the mouse around or hitting keyboard keys seems no effect on the endless Screen saver.
The Screen saver won’t turn off issue after Windows 10 Creators Update annoys quite a lot Windows 10 users.