Multiple Full-Screen Apps: If by mistake or deliberately you run multiple applications in full-screen mode, then the taskbar might appear on the screen.The sudden or regular appearance of the taskbar in full-screen is one such fault that can be caused due to multiple reasons. Windows 10 is an advanced operating system, but it has some faults which get exposed in certain situations. Why is the taskbar showing in Fullscreen? We are sharing both temporary and permanent solutions of this problem. Therefore, in this tutorial, you will learn why taskbar won’t hide in full-screen and how to make it hide in your Windows 10 operating system. However, there are some permanent as well as temporary solutions to this problem. Although this is a common problem in Windows 10, but it’s a highly annoying problem, especially if it occurs on a regular basis. Watching streaming videos or playing games in full-screen is an amazing experience, but this experience gets spoiled when the Windows taskbar suddenly appears (Taskbar showing in fullscreen windows 10) and just won’t hide in full-screen mode.