Windows 8.1 enabled you to see notifications from apps, which appeared as “toasts” above the notification tray at the lower right of the screen. However, after a notification timed out, it was lost forever. Windows 10 remedies this with its new notification centre, which is similar to the notification centre that was introduced in Windows Phone 8.1.
Within the notification centre, you’ll find:
A persistent list of notifications, so that you can view and address them at times of your choosing.
Links for performing quick actions, such as turning Wi-Fi on or off.
Open the notification centre

To open the notification centre, select the notification centre icon in the notifications area at the far right of the Windows Taskbar.