You can mark an active notification as read or unread. The 
icon next to a notification indicates that a notification is unread.
icon next to a notification indicates that a notification is unread.Procedure
- Open the Notifications pane, then do one of the following:
- To mark individual notifications as read, select the checkbox next to each notification and then select Mark as Read.
- To mark all notifications as read, select the Select All checkbox (located above the list of notifications) and then select Mark as Read.
NOTE
The Mark as Read command is enabled only if you select at least one unread notification.
- The selected notifications are marked as read.