$appname = "Microsoft Edge"
((New-Object -Com Shell.Application).NameSpace('shell:::{4234d49b-0245-4df3-b780-3893943456e1}').Items() | ?{$_.Name -eq $appname}).Verbs() | ?{$_.Name.replace('&','') -match 'Unpin from taskbar'} | %{$_.DoIt(); $exec = $true}
$appname = "Store"
((New-Object -Com Shell.Application).NameSpace('shell:::{4234d49b-0245-4df3-b780-3893943456e1}').Items() | ?{$_.Name -eq $appname}).Verbs() | ?{$_.Name.replace('&','') -match 'Unpin from taskbar'} | %{$_.DoIt(); $exec = $true}

$appnames = "^Microsoft Edge$|^Store$"
((New-Object -Com Shell.Application).NameSpace('shell:::{4234d49b-0245-4df3-b780-3893943456e1}').Items() |
  Where-Object{$_.Name -match $appnames}).Verbs() |
  Where-Object{$_.Name.replace('&','') -match 'Unpin from taskbar|Von "Start" lösen'} |
  ForEach-Object{$_.DoIt(); $exec = $true}