Some apps, such as Twitter's Windows app, offer more granular options over what sort of actions generate a notification. Poke around in the settings of the apps you use to see if
Clear out notifications
After a while, you might accumulate quite the collection of notifications in your PC's Action Center. Clearing them out is a cinch, though.
Open Action Center by clicking the Action Center icon in the system tray--it resembles a speech bubble. From here, you can delete individual notifications, clear out an entire section, or clear the whole thing.
To delete individual notifications, mouse over the notification you want to get rid of, and click the "X" button that appears. If you would like to clear out an entire section, mouse over the section heading, then click the "X" button.
Finally, if you want to delete all notifications, click Clear all in the upper right corner of the Action Center pane.
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