Windows 8 introduces a different type of notification compared to what you saw in previous versions of Windows — you see a small rectangle pop up with a message. These messages may be from different applications you have installed, and you can set those permissions individually. However, all notifications use the same appearance style. While these notifications may be helpful in most scenarios, they can be irritating and even embarrassing when showing your PowerPoint slides to an audience. There is no way PowerPoint can automatically disable them while in slide show view. Fortunately, there is a way to disable them temporarily — and you should remember to do so each time you need to show a presentation!