How to clear the history of the taskbar's hidden icons

History if you're using an XP system,
Click Start _ settings _ taskbar and [Start]_ customization,
Did you find any of the previously used program icons listed,




It certainly exposes your privacy to some extent, so how do you delete it?
Or start with the registry.

Run-regedit, open the registry, and locate the following key values:
[Hkey_current_usersoftwaremicrosoftwindowscurrentversionexplorertraynotify]
Open the value of IconStreams and PastIconsStream respectively, the right key selection and then click Cut, empty the data inside,
Then open Task Manager (Del+alt+ctrl) and end the EXPLORER.EXE process.
Then the taskbar disappears. Then, click the file-New task,
Input EXPLORER.EXE, the taskbar appears, and then click on the discovery of the use of the icon has been cleared.