How does Win8 batch clear the dynamic tile expiration notification?

Win8 Metro has a lot of expired notification messages, it is very troublesome to manually clear each time, can be set to automatically clear? For example, when the exit is automatically cleared? 1. Use the Win+Q key combination to enter the local application search. The touch screen user uses the finger to swipe the right button from the right end of the screen to the middle to select the “Search” & quoquo; magnifying glass icon, enter “ldped;gpedit.msc” in the search box. , click on the search results; 2. Select [User Configuration] → [Administrative Templates] → [Start Menu and Taskbar] → [Clear the history of tile notifications when exiting the system]; 3. In the window that opens Select “Enabled”, press the “OK" or " apply” button to restart the system. 1) If this setting is enabled, the tile notification will be deleted when the user logs out. Therefore, the tile in the start screen when the user logs in will always display their default content. In addition, all cached versions of these notifications will be cleared when the user logs out. 2) If this setting is disabled or not configured, notifications are retained so that when a user logs in, the tile notification displays the same content that was displayed when the user logged out, with a previous notification history for each tile notification.