How to pin iexplorer into taskbar in window 10

Hello every one,

I have a "Powershell" script below:

$sa = new-object -c shell.application
$pn = $sa.namespace('C:\Program Files\Internet Explorer').parsename('iexplore.exe')
$pn.invokeverb('taskbarpin')

when I run it in window 7, iexplore(IE) pin on the taskbar

but when I run it in window 10 builder 10224, IE not pin on the taskbar, not error in powershell

why? I look forward to the help! tks