Taskbar will hide now if you are in full-screen mode. When your taskbar does not go away click on the Search/Cortana button and without searching anything click back anywhere on the screen(Except taskbar and start menu). This trick is worth a try because it is so simple and easy. This is not a method but a trick that works for many people. It will restart the Windows Explorer processes and solve your taskbar not hiding problem. Taskbar not hide when playing PowerPoint Presentation or watch full screen movies Click here for more detail. STEP 2 – Scroll down on Background processes and locate Windows Explorer process(If you have an open window of Explorer then it will on top). STEP 1 – Press Ctrl, Shift and Esc button at the same time. Follow this steps to know how to restart Windows Explorer. Windows Explorer is the one the main application in the Windows operating system, restarting it will restart all the metro applications on your computer and that can solve not hiding taskbar issue. You will suddenly see that taskbar has hidden now and you can access it by hovering down STEP 2 – Turn on the Automatically hide the taskbar in desktop mode.
STEP 1 – Right-click on the Taskbar and Choose Taskbar Settings.
